The three successive phases of the general adaptation syndrome are

1. Alarm phase

2. Resistance phase

3. Exhaustion phase

Explanation:

General adaptation syndrome (GAS), is a three-stage process that describes the physiological changes that a body goes through when subjected to stress It includes three phases:

1. Alarm phase:  promotes the activity of the sympathetic nervous system

2. A resistance phase: during this phase organisms makes efforts in order to cope with the threat.

3. An exhaustion phase: This phase occurs when the organism fail to overcome the stress and depletes the physiological resources.

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.