Bc when you plan then you know what I have to do and if you don't it would be harder to maintain your health
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:
Supporting connective tissue. Hope this helped! [:D]===[
B. oxygen is not present
anaerobic means without the presence of oxygen