5. Spin class
Spinning hurts. It may elevate your heart rate and temporarily relieve you. You'll burn 400–600 calories thereafter till you reach your pre-workout weight. Ask your friends—endorphins exist!
6. Stair sprints
It strengthens glutes, calves, and abs! The high-intensity phase climbs steps, while the low-intensity period descends. A 140-lb person burns 889 calories + EPOC running stairs for an hour.