As I've reported a lot of times I really like these summer training sessions where the players get to do some interesting and out of the ordinary stuff, all the while while training. For example previously Unai Emery has taken the team on a snowy mountain resort to ski and stuff in the winter and in the summer he has taken the team in mountains hiking, bike riding and other fun activities, he has also lead the team on the beach few times.
No wonder why Valencia CF have really started the last 3 seasons very strongly in the beginning, even though their form drops after 6-7 matches.