Answer:
D.
Explanation: Two signs of hypoxia is restlessness and shortness of breath.
1. Don't smoke
2. Don't do any type of drugs
3. Get plenty of rest
4. Don't stress to much
5. Excercise to 3-4 times a week
B. Taper your training down during the last two days
remember taper means to reduce and if you do heavy exercise two days you will feel really sore so you want to reduce in those two days.
Answer: Few weeks to a month.
Explanation: ...
I would say the answer is D
if its choice all that apply then D and E