watch can show you the information on your wrist.
These devices can usually be adjusted to your
individual stamina level for training. The unit beeps
if you exceed the target heart rate. Good models are
available at specialty stores from about $100.Khru Pit trains Nonsai in knee techniques.Selecting Your Stamina Activity
Beginners train at the basic stamina intensity level, as this
type of training makes the body more resistant and lowers