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.
The entire impact falls on the knee joint. If you suffer from arthritis or other joint problems that make stairs a challenge, there are some steps you can take to improve your mobility on the stairs and decrease your pain. Strengthen your leg muscles. Leg raises are a simple way to make your muscles stronger.