The answer is A stress can lead to increased vulnerability to infections and immune deficiency disorders
Answer:
The hip flexor complex should be stretched during the warm-up.
Explanation:
The hip flexor complex is a group of muscles that are on the hip and that helps to flex and move back and forward the hip.
In order to avoid an excessive lean forward during squats, this complex should be stretch during warm-up.
During REM sleep, your brain and body are energized and dreaming occurs.REM is thought to be involved in the process of storing memories, learning, and balancing your mood.