All Abrahamic religions believe in the return of the savior, the liberator of the human beings and redeemer, in the End-Time. Prophets and divine messengers have promised the day that the whole universe will be full of justice and tenderness. Other religions also have similar beliefs, although they differ in some minor aspects, which will be discussed below. We go through references from different religions and faiths to examine their views about the last savior. 

Kalki: The Last Savior in Hinduism

In Upanishads, which is a collection of ancient Sanskrit texts that contain some of the central philosophical concepts and ideas of Hinduism, the last savior is called Kalki. He is believed to be the tenth avatar of Hindu god Vishnu in the last of the four stages in the endless cycle of existence known as "Samsara," which is defined "as the endless cycle of birth, death, and rebirth. Or as the world of suffering and dissatisfaction (dukkha)" [1].  He rides a white horse with a fiery sword. He will end the darkest and destructive period to remove adharma [i] and will usher in the Satya Yuga [ii][2]. 

Another reference talks about a just commander at the end-time who is the leader of angels and humans, who knows the truth and gets hold of everything from deep in the seas too high in the mountains, and no one greater than him will come to earth [3].

Saoshyant: The Eschatological Savior in Zoroastrianism

In Zoroastrianism, there are three saviors who each will rise in a thousand years. The last one is an eschatological savior figure who will destroy evil and will bring about the renovation of the world. He is called Saoshyant, which means the beneficent in its single form. Yet, in its plural form, it is considered to mean the redeemer. The Khorda Avesta describes this savior as such:

Whose name will be the victorious SAOSHYANT and whose name will be Astvat-ereta. He will be SAOSHYANT (the Beneficent One) because he will benefit the whole bodily world; he will be ASTVAT-ERETA (he who makes the bodily creatures rise up), because as a bodily creature and as a living creature he will stand against the destruction of the bodily creatures, to withstand the Druj of the two-footed brood, to withstand the evil done by the faithful. [4]
Accordingly, the Soashyant will rise at the end-time and fight against the vices in the world and spread justice and goodness far and wide. 

Maitreya: The Future Buddha

In some of the Buddhist references, such as the Amitabha Sutra and the Lotus Sutra, we read about the future Buddha of this world, called Maitreya, who will be a successor to the present Buddha. In Sanskrit, Maitreya means kindness and love. According to Buddhist religious texts, Maitreya will be the fifth and last Buddha who will appear on the earth. The arrival of Maitreya is expected at a time in the future when the dharma will have been forgotten by most on the earth. That is when Maitreya will appear on the earth to achieve complete enlightenment and to teach the pure dharma [5].

Li Hong: The Last Savior in Taoism

The Taoist last savior, called Li Hong, is depicted as an ideal leader who would reappear to set right heaven (tian) and earth (dì) at a time of upheaval and chaos. Li Hong will appear at the end of the world cycle to rescue the chosen people, who would be distinguished by certain talismans, practices, and virtues [6].

Savior in Abrahamic Religions

Moshiach: The Last Savior in Judaism

The Jews belief in the savior is manifested in the idea of the coming of Moshiach (i.e., Messiah). This person is believed to be a descendant of King David, who will "gather the Jews from all over the world and bring them back to the land of Israel" [7]. There are many verses in different scriptures and Talmudic [iii] literature which refer to this figure and enumerate his characteristics and manners [iv]. For instance, Isaiah says:

And there shall come forth a rod from the stock of Jesse [King David's father], and a branch shall grow from his roots; and the spirit of the Lord shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the Lord. And his delight shall be in fear of the Lord; and he shall not judge by what his eyes see, nor decide by what his ears hear. But with righteousness shall he judge the poor, and decide with equity for the humble of the earth; and he shall strike the earth with the rod of his mouth, and with the breath of his lips shall he slay the wicked.
–Isaiah 11:1-4

Those who follow Judaism believe that their savior has not been born yet. Therefore, they are eagerly awaiting the coming of the one who will save them and establish a just dominion in which "there will be world peace, no more wars nor famine, and, in general, a high standard of living" [7]. 

The Messiah: Jesus Christ (PBUH) the Savior of Mankind 

Christians believe that Jesus Christ (PBUH) is himself the savior of humankind, and he was born for this purpose. The name Christ literally means "the anointed one" or the Messiah [8]. As the Gospel of Matthew says, Jesus Christ (PBUH) has been sent to "Save his people from their sins" (1:20-21). It is also believed that Jesus Christ (PBUH) had been crucified to atone the sins of humanity and lead them toward salvation. According to Christian sources, Jesus Christ (PBUH) was the savior who was awaited by the Jews as whose coming was predicted in the Torah as the Moshiach. 

Another point which makes Jesus Christ (PBUH) the awaited savior in Christianity is the idea of his second coming or the Second Advent in the end-time to whose "day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father" (Mark 13:32). This is the belief in "the future return of Christ in glory when it is understood that he will set up his kingdom, judge his enemies, and reward the faithful, living and dead" [9]. Different gospels, including Matthew chapters 24–25; Mark, chapter 13; Luke, chapter 21:5–26, and John, chapter 14:25–29, are mentioned as the evidence for this belief. Moreover, according to biblical verses, there will be many signs indicating the end-time among which the second coming of Jesus Christ (PBUH) and the last judgment. 

Therefore, like many other religions, Christians also believe in a savior or as they call it the Messiah, who will make this world a better place and free it from oppression and injustice. 

Imam Mahdi (AS): The Awaited Savior in Islam

In Islam, the belief in the savior is rooted in the fact that Allah never leaves His creatures, especially human beings, on their own and support them through sending His apostles to guide them toward the right path: "and there is a guide for every people" Quran (13:7). He had sent 124000 prophets (PBUT) first, followed by righteous leaders who continued the path of previously chosen messengers of Allah. As the Quran says, "Certainly We wrote in the Psalms, after the Torah: 'Indeed My righteous servants shall inherit the earth.'" (21:105).

 Therefore, the earth will never become empty of Allah's guide, and people will benefit from these guiding lights either directly or indirectly. Imam Mahdi (AS), the twelfth leader of Muslims and a descendant of Prophet Muhammad (PBUH&HP), who is leading a secret life at the time, will ultimately rise and spread peace and humanity throughout the earth. "The Holy Prophet (PBUH&HP) informed Muslims about his reappearance, telling his names, attributes, appellations, and peculiarities" [10]. The time of his coming is unknown, and it is followed by the preparation of particular circumstances. 

The signs that indicate his coming include "Widespread injustice and oppression, the advent of Dajjal (Anti-Christ) who would misguide the thinking of the people, the advent of Sufyani who is one of the pillars of mischief and corruption on the earth, the formation of the Islamic army, which would raise up black standards, the voice of the angel of the sky giving glad-tidings of his reappearance, the coming down on earth of Jesus Christ (PBUH) and his paying allegiance to and praying behind in congregation Prayers led by Imam Mahdi (AS)" [11]

This belief in the last savior, who would stand against tyranny and injustice and remind human beings of their real value, also, highlights Islam's optimism toward the future of the world.

Finally, we have reviewed the belief in the last savior or the person who will save humankind from the evilness and destruction in this world in different faiths and religions. On a more in-depth look, we can find many similarities between these beliefs. However, the Abrahamic religions had a more precise and more tangible attitude toward the idea of the last savior and the time of his coming. Therefore, the concept of the savior is one of the most essential and significant matters regarding the future of human destiny. 

Notes:
[i] Opposite to dharma, which includes unnaturalness, wrongness, evil, immorality, wickedness, and vice. 
[ii] The period when humanity will be governed by gods and every manifestation or work is close to the purest ideal, and humanity will allow intrinsic goodness to rule supreme.
[iii] The central text of Judaism and the primary source of the Jewish religion. 
[iv] Isaiah 2, 11, 42; 59:20, Jeremiah 23, 30, 33; 48:47; 49:39, Ezekiel 38:16, Hosea 3:4-3:5, Micah 4, Zephaniah 3:9, Zechariah 14:9, Daniel 10:14. 

References:

1. Samsara
2. the man on the white horse
3. The Vishnu Purana, trans. Horace Hayman Wilson, London: Trübner & co., Book IV, Chapter 24.
4. Khorda Avesta, Translated by James Darmesteter (From Sacred Books of the East, American Edition, 1898.), Part five
5. Buddhism
6. Anna K. Seidel. "Perfect Ruler in Early Taoist Messianism: Lao-tzu and Li Hung." History of Religions, Vol. 9, No. 2/3
7. The end of days
8. what does christ mean
9. second coming
10. Sayyid Ali al-Husayni al-Milani, The Promised Savior: An inquiry into the imamate of Imam Mahdi (as) from the viewpoint of Muslim thinkers, part 1, p.8. 
11. Baqir Shareef al-Qurashi, The Life of Imam al-Mahdi, Trans. Sayyid Athar Husayn S.H. Rizvi, p.259-283. Pdf. 

When it comes to fasting, many questions might come to mind. Is it even healthy? Is it safe? Does it benefit my fitness goals? Those are the very most typical questions that are asked by the public about fasting. The purest form of fasting, as I am sure you have heard of it, is that of intermittent fasting (IF). Which happens to be good for your health, apt to your fitness goals, and safe. 

Intermittent fasting is one of the most popular health and fitness trends nowadays, except that it `is´ not, but `has been´ for thousands of years, practiced by different societies and cultures for a wide range of variable causes. Whether a Zen monk, yogi, Tibetan monk about the Himalayas, or a participant of any Abrahamic or dharmic faith, they all have one thing in common; and that is that they all have fasted. [1]  As mentioned in the Holy Quran, “O you who have believed, decreed upon you is fasting as it was decreed upon those before you that you may become righteous(2:183) and as Imam Baqir (AS) has said “Islam has five pillars, and those are: the Prayers (Salat), the alms-tax (Zakat), the holy Pilgrimage (Haj), fasting (of Ramadhan) (Sawm), and the leadership (Imamate),” further centering on the importance of Fasting [2]. Moreover, as the Prophet (PBUH&HP) bids, “All that it is due of Zakat, and Fasting is that of the body´s” [3]. 

Fasting in Islam is a symbol of freeing oneself from false earthly desires to a more grandiose world, in which possibilities are limitless and power is infinite. In fact, we are too driven by day-to-day life that we never contemplate the things that matter anymore, or at the very least, we do not get to do so. Imam Sadiq (AS) has bid, “Allah has manifested fasting as an obligation to bring equality between the poor and the rich” [4]. 

The Power of the Present Moment

Such spiritual undertakings such as fasting and praying have a single most important thing in common, and that is the essence of the present moment. The more engaged one is with the high vibrational energies of the moment, the less compulsive and unconscious one becomes. Now we can say that acts like prayers (which brings awareness and facilitates brain and heart coherence) and meditations separate us a little bit from the compulsive and sub-conscience-driven life style of the modern society.     
But, imagine you were introduced to a life style of letting go of compulsive behaviours, thoughts, and actions; and deeply become more integrated into the present moment in which high vibrational energies reside. Ramadhan provides this opportunity for over a billion Muslims and the people of other faiths who fast because of the fun it brings, and all fasting acts for that matter. It is very important to know that we are being so driven by life that we don’t know what fun is anymore. We are so reactive nowadays, that we are no more proactive towards our lives, being triggered left and right by what the scholars call super-stimuli (over-stimulating aspects of the modern society, which our cave-man brains have not adapted to its bursts evolutionary-wise) , which our ancestors did not dispose of until as late as late twentieth century. With the rise of super-stimuli, and the further adaptation, but not evolution, of the human brain to the dopamine (the motivation, and reward neurotransmitter) hits, we live a life of chasing phantoms(reliefs) and not challenges. 

Dopamine Detoxification 

One of the hot topics of modern productivity is the deactivation of the brain´s reward centre for a period of time. Our brain´s reward centre has become very reactive, and non-proactive, and keeps on rewarding us a little shot of dopamine, whether craving a cigarette, a glass of wine, a cup of coffee, or even as far as watching pornography and binge eating for several hours. Activities which have been proven to deliberately deteriorate our physical state [5]. Yet, our brain´s reward centre keeps hitting us with feel-good chemicals. This process goes on and on as far as lowly losing the initial sensation to the initial amount, bringing up the threshold, hence; the excessive habit loop. During Ramadan, though, we break the bad old habits, we become new, as whole as a little baby, as though we have had our serotonin (wellness neurotransmitters) re-set button pushed. Fasting is not only about freeing oneself from food, but rather from all other super-stimuli, such as; negativity, excessive sexual activities, and spilling stimulating liquids down our throats all day long. 

Now, we are freed of compulsive unconscious behaviours, and embrace the true happiness of life, the state of blissfulness and joy which is what we are born with. We can sit down not eating, not drinking, not engaging in highly stimulating activities and still feel joy, and a continuous state of happiness, what had since long been robbed of us by the advancements of the modern society. We can feel great now, with the strongest paradigm of manifestation, as mentioned by David R. Hawkins, the one and only superior paradigm to all others: being. [7]  Not having, not doing, but simply letting go of the earthly, and connect to the great source of all consciousness that is “God”. As Imam Ali (AS) said “Fasting is as much staying aloof of the taboos as it is staying away of eating” [6]. 

Physical Health Benefits of Fasting

Studies have shown that the time restricted feeding (TRF) or intermittent fasting (IMF) leads to more weight loss, which is clearly manifested in the Islamic approach to fasting. Consuming more calories in the morning has shown to be more effective than that of evening, as far as metabolism, weight loss, and prevention of obesity-which has come to be a major epidemic in the developing nations. There are self-reports of significant decrease in the volume of the fat tissues under skin which distort the good looks of our bodies. Referred experiments prove that the TRF significantly decreases the body fat, but does not affect the weight in short period of 15 days. Although more weight loss upon hitting a 30 days threshold is expected. [8]

Although cutting calories from everyday diet has quite similar effects like the IMF, Small reductions in total cholesterol (TC), low-density lipoprotein (LDL) cholesterol, triglycerides, and fasting glucose and insulin with IMF have been reported in several studies. The greatest decrease of which is in bad cholesterol contributing to a lesser chance of suffering from heart diseases.

Conclusion
Health benefits of fasting encompasses far greater areas than that of the physical health. It mentally alleviates the individual, and activates a new set of  body-substances , which grants us to focus on long-term goals and areas of our lives, and become more process-oriented than result-oriented, and adapts our brain´s reward centre to long-term rewards rather than short-term pleasures. Fasting is very complex, common people have been observed achieve the uncommon by long-term fasting; in fact, so complex that by all advancements in medical science, delving deeper into the topic is an area of future investigations.

References:

1.  Armutcu, Ferah. (2019). Fasting may be an alternative treatment method recommended by physicians. 
2. Muhammad ibn Ya'qub al-Kulayni al-Razi , Forou Kafi, vol. 4, Pg. 62, 1.
3. Muhammad ibn Ya'qub al-Kulayni al-Razi , Al-Kafi, vol. 4, Pg. 62, 3. 
4. Muhammad ibn Babawayh , Man La Yahdaraho al-Faqih, vol. 6, Pg. 43, 1. 
5. de Zwaan, M. Binge eating disorder and obesity. 
6. Muhammad Baqir Majlisi, Bihar al-Anwar, vol. 93, Pg. 249, 
7. Erik H. Cohen, Rachel Sagee et Rivka Reichenberg, « Being, Having and Doing Modes of Existence
8. Effectiveness of Intermittent Fasting and Time-Restricted Feeding Compared to Continuous Energy Restriction for Weight Loss.