"Playing baseball" is the obvious answer. Unfortunately, there's no summer league team for my son (RHP) to play on over here in Seoul. He's been on a summer team in the States the past two summers but this year we have to wait to go back since our dropping him off at college will take us well towards the end of August.
So besides playing the game, is your son doing any extra work to prepare for the demands of college fall ball/workouts?
We're doing a variety of things. A lot of strength, a lot of tubing and Jobe, throwing a couple buckets every few days (flat ground, extending stride length, spotting, 'mental focus'), and a lot of trail running on the mountain trails near our home -- finished by 60-yard sprint segments all the way back home. It's the best we can do. I wish he could play summer (actually, he's been picked up for a season-ending tournament the first week of Aug so may get a couple games in), but I hope what we're doing will have him in peak overall condition, and going in with a relatively well-rested arm.
And y'all? Any special prepwork?
[Side Note: The couple of books I ordered for him about managing college life and workload, etc, have gone unopened. Three weeks into summer break, I saw uesterday that he's only on page 33 of the book all incoming FYs are supposed to read this summer......ugh.....part of me wants to let him rest after working very hard on his academics all thru HS, but knowing what he'll be facing at school, I also want to crack the whip a bit and make sure he knows that college is NOT a four-year baseball camp!]