Answer:
Target heart rate is generally expressed as a percentage (usually between 50 percent and 85 percent) of your maximum safe heart rate. The maximum rate is based on your age, as subtracted from 220. So for a 50-year-old, maximum heart rate is 220 minus 50, or 170 beats per minute.
Explanation:
The correct answer should be <span>A. Bob twists his back to pick up the materials to feed his press machine. </span>
Answer:
safety, cost, and consumer testing.
Answer:
I don't see different between Physical and exercise.. Both of them help body and make muscles