timing how long it takes for your kettle to boil 1 cup (250ml) of water. looking at the power of your kettle (Watts, often found on the base of the kettle) joules = wattage x time (in seconds)
Rock climbing can help build and tone your legs and glutes. Indoor rock climbing is a sport that when properly executed, recruits every major muscle group in the body. Rock climbing is a full body workout that tones and strengthens the arms, shoulders and core muscles. You can also effectively strengthen and tone your legs and buttocks with regular indoor rock climbing sessions.
Stair Climber. Stair climbers are known to work the thighs and tush while burning calories, but they also benefit the belly area. As you build muscle during your stair climber workouts, your body will become a more efficient calorie-burning machine. This helps you lose weight all over, including the belly area.