Anyone that has known me for more than about 3 minutes would tell you that PT is a huge and important part of my life. I've been a competitive athlete since I was 6 years old...that's almost 33 years. Most of that time was spent particpating in sports that demanded multiple training sessions per day (swimming and water polo). Given that over time I became completely accustomed to that schedule I've continued it.
I train now on a 12 week "on" and 1 week "off" cycle. It works for me: gives me some time off occasionally for vacation/relaxation, slots nicely into the year (basically it means I have a cycle for each season). This past week was my "off" week between cycles, and this morning was the first of two "test" days where I determine what I'll be working on in the coming cycle and some baselines for performance evaluation.
Can I just tell you how nice it was to get back in the pool and the weight room? The start of the "off" week is always nice...I get to sleep in a bit, get to eat what I'd like (within reason), etc. But by the end of it I'm dying to get back to work. I guess that's a good sign.