New Delhi, June 19 -- Considering that temperatures routinely exceed 42degC in North India, one can understand the urge to avoid outdoor exercise in the summer months. Nevertheless, with a certain degree of preparation and adaptation, it can be done safely. It is important to understand how the body responds to extreme conditions and what measures are needed.

The effect of heat on an active body

During physical activity, a lot of heat is generated by muscle metabolism. Under normal conditions, the body easily copes with its release through sweating and increased blood flow to the skin. Extreme heat creates serious challenges for a person. The cardiovascular system should deliver blood both to working muscles and the skin for cooling. Th...