Now, I've been working out, to some degree, for over 20 years. When I work out with the hubby, he tells me to "go for the burn," which I have always interpreted as "keep doing reps until your muscle is fatigued and you don't think you can do any more." I didn't realize until TODAY that there is an actual...literal...BURN. I mean my muscles were ON FIRE!!!
At one point, while doing wall squats with dumbbells, my left thigh began quivering uncontrollably. And when I partnered with my extremely fit and strong daughter-in-law to do bicep curls with a shared band, I thought she was going to sling shot me into the mirrored wall.
At the end of the hour, Smiley told us that we would increase the intensity as time goes on. Say what?