An aerobics<unk>  instructor motivates her class to keep up the pace in United States. Physical<unk> s are generally grouped into three types, depending on the overall effect they have on the human body: * Aerobic<unk>  is any physical activity that uses large muscle groups and causes the body to use more oxygen than it would while resting. The goal of aerobic<unk>  is to increase cardiovascular endurance.<unk> amples of aerobic<unk>  include running, cycling, swimming, brisk walking, skipping rope, rowing, hiking, dancing, playing tennis, continuous training, and long distance running. * Anaerobic<unk> , which includes strength and resistance training, can firm, strengthen, and increase muscle mass, as well as improve bone density, balance, and coordination.<unk> amples of strength<unk> s are push-ups, pull-ups, lunges, squats, bench press. Anaerobic<unk>  also includes weight training, functional training, eccentric training, interval training, sprinting, and high-intensity interval training which increase short-term muscle strength. * Flexibility<unk> s stretch and lengthen muscles. Activities such as stretching help to improve joint flexibility and keep muscles limber. The goal is to improve the range of motion which can reduce the chance of injury. Physical<unk>  can also include training that focuses on accuracy, agility, power, and speed. Types of<unk>  can also be classified as dynamic or static. 'Dynamic'<unk> s such as steady running, tend to produce a lowering of the diastolic blood pressure during<unk> , due to the improved blood flow. Conversely, static<unk>  (such as weight-lifting) can cause the systolic pressure to rise significantly, albeit transiently, during the performance of the<unk> .
Exercise
Diet 
Obesity
Allostatic load
Ageing
Vegetation 
Medication
Hypertension