Do a 5-minute plank.

“On day three, I decided to do one of my five-minute planks after a few sets of pull-ups so my arms were throbbing majorly as I got down into my forearm plank. I lasted two minutes (watching YouTube videos of a competitive eater to help the time go quicker) before collapsing. I then had to rest about every 45 seconds for the remaining three minutes. I felt like a major failure but a lesson learned: don’t hold a five-minute plank after working out your upper body!”

“Who knew holding your body still for five minutes could be so sweaty? I guess I didn’t really fully appreciate the amount of sweat that could drip down my back and torso holding a plank. Honestly, time under-tension workouts are tough, and muscles are working just as hard (if not harder!) than they are doing non-static exercises.”

“Ok, so five minutes doesn’t seem like much but when you’re holding a plank and squeezing your core, leg, and back muscles, well let’s just say, time certainly does not fly. But five minutes at the start of my week felt very different from five minutes by the end of my week. My core must have adapted slightly, as I could definitely have held the plank for longer by the end of my challenge.”