Final answer:
Exercise can improve the health and appearance of the skin, while immobility can lead to pressure ulcers or bedsores.
Step-by-step explanation:
Exercise and immobility can both have effects on the integumentary system, which includes the skin, hair, and nails. Regular exercise can improve the health and appearance of the skin by increasing blood circulation, promoting the delivery of oxygen and nutrients to the skin cells, and enhancing the production of collagen, which helps maintain the skin's elasticity and firmness. On the other hand, immobility can have negative effects on the integumentary system. Prolonged immobility, such as being bedridden, can lead to pressure ulcers or bedsores, which are painful wounds that develop due to prolonged pressure on certain areas of the skin.