https://padlet.com/addison_degener/kdxxb93tkh65 en-us 2018-03-22 15:07:55 UTC 2025-11-08 07:39:19 UTC hello@padlet.com addison_degener https://padlet.com/addison_degener/kdxxb93tkh65/wish/245045896 Muscles are used to pump blood, to protect internal organs, and to breath. You have more than 600 muscles in your body. The three types of muscles are cardiac, smooth, and skeletal. The cardiac muscle works 24 hours a day everyday of your life. The smooth muscle can remain contracted for long periods of a time. There are over 400 skeletal muscles in your body. You can move voluntary muscles. You can't move involuntary muscles. I learned why the your legs feel weird when you do a wall sit. I also learned that there is muscle fatigue in your muscles. Fatigue was building up and muscle fibers are turning on and off while I was doing the muscle activities.]]> 2018-03-22 15:10:30 UTC https://padlet.com/addison_degener/kdxxb93tkh65/wish/245045896