Re: I can't seem to keep my clothes on!
I've tied my belt every possible way and it always falls off. Always. It's to the point where in bjj or judo I simply stop putting it back on and just kick it off the mat ( note, most judo/aikido teachers get very angry at this, so it's probably a bad idea ).
As for my pants, I put them on, then I warm up. Usually this will cause the cotton to stretch out a bit. Then I untie them, pull the draw strings tighter, and retie it. This will usually last for the whole class.