Be sure not to get any moisture in the battery compartments or headphone jack , as this will damage the monitor. DO NOT put in dryer . The Owner's Manual has a list of replacement parts that are available from Newlife Technologies. For best sound quality, we recommend headphones with an impedance of at least 32 ohms with a right angle plug fit best. Another term for this is lactate acid threshold.
Recovery rate is measured immediately after exercise or after waiting a specific period of time.
Recovery rate is an indicator of increase in cardiovascular fitness, and helps determine when it is safe to progress in a training program. It is also used when prescribing exercise for cardiac rehabilitation patients. A zone has upper and lower limits. Target zones vary depending on an individuals fitness level, goals, training, and health requirements. Heart disease is the number one killer of women in America.