"Try this. You’re too heavy on your back foot." John allowed himself to be led into a southpaw stance by this beauty of a dancer. He was sure there would never be anything more than a small friendship between the two. Sherlock was obviously a genius from a wealthy, influential family. He, on the other hand, knew he’d be leaving soon. He’d signed a contract with the army to pay for his med school. Boxing was a way to keep fit. He wasn’t sure how to bring this up to Sherlock or if he could risk his heart and their fledgeling friendship.