I think the answer is REM sleep but look it up to be sure
Answer: Their relationships may be angry and unpredictable, and they are likely to have few long-term friendships. They may be aloof in personal relationships and appear lonely.
Explanation:
I think track since softball can be more work
Answer:
According to research jump rope for a minimum of five minutes a day can improve physical fitness and when you build to ten minutes of nonstop jumping at 120 RPMs it can provide the same benefits as all of the following except:
Answer:
After he has adjusted to his exercise routine he should increase the intensity of the workout. Ex. add weight/ increase reps. This will help get his heart rate higher.
Explanation: