It's been a long summer already.  For me, it's hard to train here in Phoenix over the summer, due to the heat.  The problem is, that's the time to train for fall triathlons and half-marathons.  This year, I've been trying to do a good bit of training outdoors, to adjust to the heat during the run on some of the triathlons this fall.  I've learned that there should be a good balance of indoor/outdoor training.  I get discouraged when I feel terrible on outdoor training runs or rides.  But, I a...