Sanskrit word तप्त has two meanings 1) Heated 2) Refined
When something is in तप्त state, invisible refinement is natural.
Our body goes through transformation when we expose it to originator of universal fire i.e. The sun.

सूर्य नमस्कार (+ any sports under the morning sun) is the primary vaccine. Keeps us refined i.e. तप्त. Keeps us miles away from abnormal aging, cancer, weak heart etc. The key is : Early morning physical activity.

Remember : सूर्य नमस्कार is not same as beach tanning. Body has to be physically active under the morning sun. Idle body under the sun = extreme ultraviolet radiation. Not good.