Do each exercise for 45 seconds followed by a 15-second rest between exercises. Complete four total reps of each circuit, taking two-minute rests between circuits.
- Bodyweight squats
- Bent-over rows: use household items like water jugs if you don't have dumbbells for added resistance.
- Jog: jog the stairs in your building for 5-10 minutes or at a moderate pace for 10 minutes.