Just finished Day 1 of FB Sweat, a 4 week program that gives the option to do either around 30 minutes of activity or 50 minutes of activity, 5 days a week. (One other day is stretching and the other is a complete rest day).
Today's workout was a lower body strength and cardio routine that kicked my butt (and legs!) and made me sweat quite a bit! I know I'll be sore tomorrow but I'm glad I pushed through it.

38 minutes total including the warm up and cool down.