India, Jan. 13 -- Marathon running is not only a test of heart strength but also of the strength of the mind. Thousands of runners will be tested to the limit in challenging climatic conditions at the Tata Mumbai Marathon (TMM), scheduled for Sunday, January 18, 2026, in Mumbai. Although the physiological impact on the runner's heart and energy systems may be a strong motivator, a well-constructed strategy for safety and performance is necessary.

To protect your heart and prevent fatigue during a marathon, consider these key tips:

At 42.2 kilometres, the heart endures significant stress. To protect it:

The causes of fatigue in a marathon are most often either glycogen depletion (the wall) or electrolyte imbalance.

The heart is like an...