Would you rather SIT or HIT?
SIT sounds like it’s too passive and HIT sounds too aggressive. But they are actually acronyms for intense forms of activity that can help us to better health and fitness in a fraction of the time that current exercise programs recommend.
SIT is Sprint Interval Training. HIT is High Intensity Interval Training (because HIIT is harder to say).
Sprint Interval Training means going all out in 30 second sprints on special laboratory bikes interspersed with four and one-half minutes of slow cycling. If you are young and healthy, this is probably the fastest way for you to get fit.