There should be an option for "I don't need to hack this part of my life." I'm already good at not procrastinating, but answering "I don't think this hack is worth trying" seems to imply that I judge the hack to be crappy, rather than I don't feel I need it.

This poll needed the "I don't think I need this" option. Exercise (rock climbing currently) is so much fun I don't remember what not doing it is like.

Hm, I'm not too surprised that so many have only intended to try lukeprog's algorithm--the only time I ever tried it, I thought to myself "wow, this is convenient, I'm procrastinating and I remembered to try lukeprog's algorithm". If you use Anki regularly, you can try making "situation/response" type cards to deal with this problem--e.g. the front of the card says "You're procrastinating" and the back says "Try lukeprog's algorithm".

I've been exercising regularly for too long to have a good idea of what not doing so would do to my energy levels. When I stop for a while, it's usually because I'm on vacation or too busy to have the time, and either way I feel the resulting diffs would be worthless; being in new or unusual situations (as I generally am on vacation) consistently boosts my energy, and being busy enough that I don't have six to ten hours a week or so to spare predictably drains it.

Within my usual range of variation, I've noticed effects on mood, but not on energy or willpower.

What do you mean by exercise (as a method to beat procrastination)?

I find physical exercise kind-of useful for certain things, but I'm not sure it enhances my willpower that much.