In Sanatan Dharma and the Indian way of life, ‘Upvas’ (fasting) is not merely the physical act of giving up food or starving; rather, it is a highly effective and divine path to bring the soul closer to the Supreme. The word ‘Upvas’ is derived from two words—’Up’ meaning ‘near’ and ‘Vas’ meaning ‘to reside’. Its literal and spiritual meaning is to reside near God by distancing oneself from worldly tendencies and material desires. We observe fasts so that our attention can shift from food and sensory pleasures to divine contemplation, self-introspection, and internal purification. When the body gets a break from the continuous task of digesting food, it utilizes its entire energy in the rejuvenation of the body, mind, and soul. Fasting teaches a person discipline, restraint, and purity (Satvikta). Let us discuss in detail the wonderful and multidimensional benefits of fasting that completely transform our spiritual, physical, and mental lives.
Spiritual Significance and Outcomes
The foremost and primary objective of fasting is spiritual elevation. When we voluntarily give up food, we elevate our consciousness from the material level to the subtle and divine level.
Closeness to God and Self-realization
Most of human time and energy is spent satisfying physical hunger and gathering material comforts. During a fast, when we consume Satvik (pure) food or abstain from food entirely, the heaviness of the body disappears. Because of this lightness, our consciousness becomes upward-moving. When the body does not spend its energy on the digestive system, the same vital energy (Prana Energy) helps in awakening our chakras and deepening our meditation. Chanting, singing hymns (Kirtan), prayer, and meditation done in this state reach God directly. The mind turns inward, away from worldly subjects, allowing the seeker to experience self-realization and true proximity to the divine.
Purification of Karma and Destruction of Sins
In the Sanatan tradition, fasting is considered an essential part of ‘Tapasya’ (penance). Tapasya means to voluntarily endure hardship to purify oneself. Just as gold becomes pure when heated in fire, similarly, a person’s accumulated karmas and sins are reduced to ashes in the fire of fasting (Tapagni). When we follow the rules of fasting, suppress our desires, and practice forgiveness, compassion, truth, and celibacy, the negative karmas of our past and present lives decay. Fasting removes the veil of ignorance and attachment covering the soul, establishing it in its original, pure, and luminous form.
Control over Senses and Increased Willpower
Among all human senses, the tongue (taste) is considered the strongest. A person who gains control over their taste buds and hunger finds it extremely easy to conquer other tendencies like lust, anger, greed, and attachment. Fasting is the greatest tool for sense control (Indriya Nigrah). When your favorite food is placed in front of you and you take a pledge not to consume it in the name of God, your willpower multiplies infinitely. This self-discipline not only empowers your spiritual life but also gives you immense strength to fight adverse situations in your practical life.
Physical and Health Benefits
Ancient Ayurveda states—”Langhanam Param Aushadham,” meaning fasting is the ultimate medicine. Modern science is also now acknowledging the miraculous physical benefits of fasting through concepts like ‘Autophagy’, which our sages had realized thousands of years ago.
Resting the Digestive System and Detoxification
Our digestive system works tirelessly, day and night, from birth to death. Continuously eating heavy, fried, and rich foods gives the stomach and intestines no rest, causing ‘Ama’ (toxins) to accumulate in the body. Fasting is like a ‘holiday’ for our stomach and intestines. When we fast, the digestive fire (Jatharagni) does not have to work on digesting new food. In this scenario, this fire burns down the old waste, toxic elements, dead cells, and harmful bacteria accumulated inside the body. This process leads to complete internal cleansing (detoxification) of the body and purifies the blood.
Increased Energy Levels and Elimination of Lethargy
Generally, people believe that not eating causes weakness, but the scientific and spiritual truth is quite the opposite. About 60-70% of the body’s energy is spent digesting food. After eating heavy and Tamasic food, lethargy and sleepiness (Tamo Guna) increase in the body. When we fast, this wastage of energy stops. The energy that would have been spent on digestion begins to flow throughout the body, infusing it with new vigor, lightness, and incredible agility. A person feels far more energetic and active than before.
Disease Prevention and Longevity
Fasting is the most foolproof way to naturally boost the body’s immunity. When the body is purified from the inside, the balance of the three doshas—Vata, Pitta, and Kapha—is established. According to Ayurveda, the root of all diseases lies in the stomach. When the stomach is cleansed through fasting, the chances of developing terrible diseases like obesity, high blood pressure, heart disease, diabetes, and even cancer are significantly reduced. Fasting accelerates the body’s process of creating new healthy cells, which delays aging and blesses a person with a disease-free and long life.
Mental and Emotional Clarity
Along with physical and spiritual benefits, fasting has a profound and positive impact on our mind and brain. It removes mental disorders and brings new clarity to life.
Purification of Thoughts and Stress Relief
The Upanishads clearly state—”Aahar Shuddhau Sattva Shuddhi:” (As is the food, so is the mind). When we give up grains and consume fruits or Satvik food during a fast, Satvik elements increase in our body. Tamasic and Rajasic thoughts (such as anger, anxiety, lust, and jealousy) generated by heavy food automatically begin to fade. In today’s fast-paced life, where humans fall prey to extreme stress, depression, and anxiety, fasting acts as a natural stress-buster. An empty and clean stomach ensures a smooth flow of blood to the brain, keeping the mind calm, stable, and happy.
Mental Concentration and Positive Energy
It is impossible to focus on any intellectual or spiritual task with a heavy stomach. During a fast, the upward flow of Prana energy multiplies the brain’s efficiency. This brings an unprecedented increase in our concentration and memory. When the noise of useless thoughts in the mind is silenced, a positive energy bursts forth from within. A person becomes capable of viewing and understanding life’s challenges with much more clarity and peace.
Emotional Control and Self-Discipline
Normally, a person becomes irritable, angry, and impatient when hungry. But when we take a vow to fast, we go against this natural instinct and voluntarily practice remaining calm. This practice teaches us to control our emotions. A fasting person does not lose their patience even in adverse and difficult situations. They realize that if they can control their most fundamental need (food), they can control any emotion or situation in life. This emotional balance brings them success and respect in every sphere of life.
Special Benefits of Specific Fasts (A Unique Spiritual and Scientific Perspective)
In Sanatan Dharma, numerous fasts are scheduled throughout the year. Each fast has its specific timing, astronomical position, and scientific basis, which multiply the physical, mental, and spiritual benefits mentioned above. Let us understand how specific fasts benefit our lives:
The Infallible Benefits of Ekadashi Fasting
According to the Hindu calendar, Ekadashi comes twice a month. Science acknowledges that the moon’s gravitational pull affects the earth’s water, causing tides in the ocean. Our body is also composed of about 70% water. During Ekadashi, due to the moon’s position, the water element in the body and the thoughts in our brain become highly volatile and unbalanced. Fasting on Ekadashi keeps the stomach empty, which balances the water levels in the body. This directly calms our mind, prevents mental instability, neutralizes the negative effects of the moon, and focuses the mind on meditation and devotion to Lord Vishnu.
The Impact of Navratri and Sawan Fasts
The festival of Navratri primarily occurs twice a year when the seasons are changing (transition periods). During these seasonal shifts, the human body’s immunity is at its weakest, and the risk of infection is at its peak. Fasting for nine days during this time provides an impenetrable protective shield to the body. It protects against seasonal diseases and adapts the body to the new season. Similarly, during the month of Sawan, when digestive power is extremely sluggish due to the rainy season, observing the Sawan Monday fasts or fasting for the entire month saves the digestive system from heavy grains and keeps it healthy. Spiritually, fasting and restraint during these specific days help directly absorb the special divine energy (Shakti and Shiva elements) present in the universe into our body and soul.
Benefits of Pradosh and Shivratri Fasts
The fasts of Pradosh and Shivratri are dedicated to Lord Shiva. Shiva is the deity of welfare and detachment (Vairagya). Fasting on these specific dates destroys worldly attachments and illusions from within a person. The ‘poison’ (negative thoughts, ego, and sorrow) that we consume in our daily lives—this fast, like Lord Shiva, stops that poison in the throat itself, turning the body and mind into nectar. Under the influence of these fasts, a deep sense of detachment awakens within a person, and they experience supreme bliss, free from the fear of life and death.
