Jawapan

2016-07-31T12:16:32+08:00
Your body normally uses oxygen to produce energy, with this oxygen supplied via your bloodstream. This results in a direct, positive relationship between your heart, breathing and physical activity rates. However, your physical activity rate can exceed your maximum heart and breathing rates. This results in the short-term production of energy without oxygen. By combining aerobic and anaerobic activities, you can greatly increase your strength, stamina, training gains and cardiorespiratory fitness.