Re: Thoughts on summer training
I remember one seminar with Endo sensei in Germany, 35 °C outside, on the tatami I wouldn't even want to guess. It was crowded as always, the windows didn't open and the A/C didn't help at all, really.
I didn't stop training but it was very, very uncomfortable. And there were three water breaks in the final two hours.
At home, we don't have A/C at all, but a nice, big garage door that we can (and normally do) open when it's warm and dry. So far, it was always okay.
I wouldn't think about "taking the summer off" (unless I go on non-Aikido holiday, then it's fine...), but then I guess summers here in Germany are pretty harmless, anyway...