Hi. My 17 Year Old Son Was Hit In The

Hi. My 17 year old son was hit in the lip with a hockey stick on Monday. Teeth are fine due tonwearing a mouth guard, but he had a deep cut to his bottom lip on the right side that required 4 stitches on the kutside of the lip and 4 stitches on the inside. This is ithe start of hockey season and he ideally needs to keep fit. How soon can he exercise, and what type of exercise?