So I have heard a few parents mention buying compression shorts for their sons to bring to CBT this summer. Are these necessary? My son has not needed them for his sports so this is something new for him (and me). I had to google it to learn what they are and how they are used. We have not yet gotten the list for what to bring on RDay so I don't know if this item is on the list but with hearing so many comments about them from other parents, I thought I'd ask about them here. Thanks in advance.