One of the struggles in grad school is the 30 minute conundrum. Think of all the activities you have to choose from that, if you just invested 30 minutes a day, would improve your productivity, foster your self image, and win with war for the allies.
Well, here’s an interesting study by Charles Emery and colleagues that went like this. When older, sedentary folks were given a small skin injury, half were assigned an exercise regime of 1 hour, 3 times a week. The couch potato controls healed, on average, in 39 days; the new exercizers healed 10 days earlier.
You have only one body. Exercise and good diet is the way you take care of it.
Just do it.
ht trizle
Survive and Thrive in Grad School 
Good advice. I can’t help but wonder, though, why it is that research I do/did (as a sometimes pollster and used-to-be historian) has/had to be cleared by the people at the Institutional Review Board for the use of Human Subjects, usually before I had a clear idea what questions I was going to ask, and yet somebody approved stuff like giving subjects a “small skin injury.”
Don’t ask me. I work on ants. Vertebrate work gives me the heebie jeebies! 😉