Question

Rahul went to play after a long gap of time and played for a long period; he then felt pain in his muscles. Why does it happen?

Answer 1

Answer: When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn't involved in this process.

Explanation:

Answer 2

Due to the production of lactic acid