Answer:
Strengthens muscles
Explanation:
Exercise has lots of benefits, both for our physical and our mental health. Mental health includes our emotional wellbeing and how well we can function in day to day life. Physical benefits are more related to the rest of our body such as our heart, bones, joints, and muscles.
Lessening anxiety, alleviating stress, and building confidence and self-esteem are all examples of mental benefits of physical activities.
Strengthening muscles is a physical benefit. Other physical benefits include improving lung capacity, improving joint mobility, and reducing blood pressure.
I think the answer would be, The Pericardium.
