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.
Rock climbing builds muscle and endurance. Contrary to what many beginners may believe, climbing requires much more than upper-body strength. The success of sending -- or completing -- a route relies heavily on a long list of physical factors, including intricate footwork, lower body strength and lean muscle mass.