There are 313 calories in 1 medium Blueberry Muffin. Get full nutrition facts and other common serving sizes of Blueberry Muffins including 1 mini and 1 oz. Register | Sign In
However, it is now well established that extensive periods of bedrest can cause harm to the rest of the body. The most obvious effects of long periods of immobility are seen in the musculoskeletal system, with the loss of muscle strength and endurance, and bone weakening. Bones undergo a progressive loss in mass through a condition known as disuse osteoporosis.
A major effect of long-term weightlessness involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a weightless environment differ from those required in terrestrial locomotion.