how can one avoid hypothermia and hyperthermia when doing moderate to vigorous mountaineering activities?​

sometimes may be sometime may be not!

Explanation:

hope this will help you anyway hiii

1. Hydration and nutrition. Have extra snacks and water, and keep them handy.

2.Proper clothing. Remember that “cotton kills.” When you might run into rain or snow, it's best to wear synthetic materials or wool, which, unlike cotton, can keep you warm even when wet.

3.Proper layering. ...

4.Good rest management.