Comfort is essential to safety, but deal with seat cushions, clothing, hat, sunglasses, sun block, food, water and urination before takeoff. This should include everyone on board. If it’s cold or you intend to soar high where it’s always cold, be careful to not work up a sweat pushing the sailplane into launch position. Especially troublesome are damp socks, whether from snow, dew, or persperation, which can amount to packing your toes in ice once you’re high and far from relief. This one seemingly minor factor can spoil the fun, or even impair pilot judgement.