1 Have students keep a record of their heart rates for one week by taking their pulse a few times a day. 2  Note time of day and activity at the time. 3  The amount of time the heart takes to return to a normal at-rest rate after exercise is called recovery time. 4  This is a measure of the body's general fitness. Note time of day and activity at the time. 2  The amount of time the heart takes to return to a normal at-rest rate after exercise is called recovery time. 3  This is a measure of the body's general fitness.
shard. n. 1. A broken piece or fragment, as of pottery or glass.2. Zoology A tough scale or covering, such as the elytron of a beetle.hard. n. 1. A broken piece or fragment, as of pottery or glass.
1 Acid reflux (GERD) is a condition in which acid backs up from the stomach into the esophagus and even up to the throat, irritating the tissue.  Acid reflux can be caused by many different things, including lifestyle, medication, diet, pregnancy, rapid weight gain, and certain medical conditions.