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.
Step Up Your Game. To build thick, strong legs, do step-ups, which are an incredibly effective resistance exercise. Stand up straight with a narrow stance in front of a step. For big muscle gains, it's best to use a step high enough so that your leg forms a right angle when you step up onto it. Hold a dumbbell in each hand and extend your arms straight down at your sides. Step up with your left foot, then with your right foot and then step back down, starting with your right foot.