When a person is performing intense physical exercise and begins to feel fatigue and a burning pain in the muscles, it is most likely due to the muscles’ accumulation of?

Describe the concept of interval training. what is the benefit of this type of training?

Astairway has 6 steps. is it a handrail required? a. a handrail is required b. a handrail is not required c. double handrails are required d. only nosing is required

Which action is the cerebrum responsible for? a. breathing b. coordination c. problem solving d. balance and one more question which characteristic true of both boys and girls during puberty? a. a curvier shape b. a deeper voice c. weight loss d. body hair