Are effective for individualized training and for classroom training.
all of the other answer seem unnecessary!!
Thyroxine is when the main hormone is produced by the thyroid gland,acting to increase metabolic rate and so regulating growth and development.
Answer: B. tone the muscles and stabilize the joints for the workout
Explanation:
Warm up exercise helps to activate the muscles via stretch reflex when the muscles are lengthened. It helps to loosen the muscles and joints and thus helps to prevent any kind of injuries.
There are basically three steps of warm up. namely, loosening of joints , stretching of muscles, pumping of the heart, and practising of the actual movements of the exercise. All these ultimately increase the muscle's capacity to work and also stabilizes the joints to prevent any kind of injury.