KAHUKI, Hawaii â The class of 2015 at Kahuku High and Intermediate School had a memorial graduation ceremony as they performed a choreographed song and dance.
Muscle-strengthening activities improve the strength, power, and endurance of your muscles. Examples of muscle-strengthening activities are: 1  doing pushups and situps. 2  lifting weights. 3  climbing stairs. 4  digging in the garden.
When youâre lifting weights, it causes tiny, microscopic damage to the fibers in your muscles. The body then works to repair this damage, which increases the size of the muscle fibres in a process known as hypertrophy.