Kick these 10 bad-training habits and start building muscle fast.
#4. You're not measuring your heart rate
Knowing your heart rate during a conditioning circuit or running interval is a way of quantifying your exercise intensity. Measuring your heart rate is like comparing submaximal weights to your max (load lifted for one rep). Different heart rate percentages of your max heart rate will recruit different energy systems and result in different training effects. Your heart rate can also be recorded during your recovery periods, which will give you an indication of your recovery ability and your current fitness level.
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