Exercise hurts

If you want to torture someone, and they have never done an exercise like this before, make them do decline situps.

Then force them to do it again two days later.

The first time is incredibly difficult. The second time will leave you weeping like a baby. You are using muscles you hardly ever call upon, and they will protest in a painful way (think knives scoring your sides).

This is the ugly truth of exercise. The second time is the worst.

Thankfully it always gets better.