I can.
People who can't outrun their forks aren't running hard enough.
Hunting down a lot of calories and eating them is part of being a mammal. I bicycled across North America one fall on a mostly mountain route. Four times a day I ate full meals and added as many Dove bars as I could without being sick in between. I biked up and down hills with 30kg of gear all day. And I lost a lot of weight.
Sure it hurts to work that hard, but it's supposed to hurt a little. Being comfortable all the time isn't part of being a mammal.