Your muscles work the hardest when you exerciser. This is because the strongest muscle (your heart) begins to pump blood around your body faster making your other muscles work faster too.
when you are putting much stress on them and are breaking down small fibers that help build the muscle.
When you are exercising
thats why i asked
youyr heart and lungs work the hardest
Left Ventricle
heart
when you are excersizing
AnswerLeft (reason why it's bigger)
the hardest working horse is a appolosa. the hardest working muscle in your body is the heart. it pumps loads of blood through your body every second!
For some people, you should set out your homework from hardest to easiest because the hardest work takes time to do and the easy work will be finished faster.
sleeping
yes
The question is not clear. Hardest, as in the most rigid, is a triangular prism (or tetrahedron). Hardest, to work the geometry of, is probably an irregular blob.
To work harder than your hardest involves you pushing yourself to the limit, working harder than you ever have before.
Zelarona-KiKi means a heart of beauty