Hot food is good, inexpensive. You don't need to buy, say, meat at all, just put the spices on a heated, wet newspaper, tofu or pulp. You wouldn't taste the meat anyway :o)
Chili makes me sweat like a horse even when it's not hot. It's enough that it's chili - in one minute I must start drying my head and face. The sweat drips from my brows.