How often do you guys exercise? I find that when I get on one of those "low" periods when I feel sluggish, unhappy, and just very..blehhh, a quick 10-15 minute run can be a significant mood booster...I come back, shower and 9/10 times feel better....it's just one of those little things that I (and you) can do to help whenever I'm not feeling my best. There was literally one time, I was at the office, it was 10 in the morning and I had been up for 4 hours already and was feeling shitty...so I ran down the building and walked back up the stairs, did a few pushups where no one can see, it took like 5 or so minutes and made a whole day's worth of difference.