Summer motivation has to come from the kids. 1. Call your best kids in and challenge them to challenge their teammates. In 2009, our juniors led the charge. In 2011, it was our seniors. This summer, our seniors are leading, but our big group of freshmen are highly motivated and their presence really heats it up because of how hungry they are and how bad they want playing time. It's pushing the older players. In 09 and 11 we had taken some bad beatings at the end of the previous season and those leaders were determined not to let it happen again. Now its the opposite. They feel the pressure to defend. Either way, the kids are the ones lighting the fire. 2. You can't just powerlift and run sprints. Its too hot, too boring, too exhausting, and they have too many things they'd rather be doing. Put some variety in it. Make at least some of it fun. For whatever reason, flipping tractor tires is somewhat fun, but powercleans suck. Its the same exercise!! Pulling the speed sled is fun and promotes competition because we race while we're doing it, but doing lunges sucks. Etc, etc. 3. Invite the junior high players. Your varsity players go much harder when the young guys are around. Promotes leadership. Summer is tough and its hard for the coach to have much of a motivational impact. But if the leaders encourage, cajole, shame, threaten, text, facebook, tweet or, heaven forbid, call the other kids to come, it works.