I felt like that before..
I say it's normal. It's all part of growing up.
Everything's going to be okay!
We got your back! <D
The answer is answer choice A
Muscle strain and soreness after axercise
Organ Systems. When a group of organs work together to carry out a body function this is the what it is called.
Integumentary system. This is the external covering of our body, our skin.
Skeletal System.
Muscular System.
Nervous System.
Endocrine System.
Cardiovascular System.
Lymphatic System.