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.
In sport climbing, you climb routes that have been established by other rock climbers and have bolts and anchors permanently placed in the rock. A more experienced climber will climb up the route with a rope using bolts, quick draws, and removable hardware as protection to protect there falls as they climb.