Why is weight training beneficial?

It promotes the following:

1. Physical Development
2. Mental Development
3. Social Development
4. Emotional Development
5. Spiritual Development

Characteristics of Muscle Tissue:

1. Extensibility
2. Elasticity
3. Excitability
4. Contractility

Types of Muscle Tissue:

1. Skeletal Muscle
2. Smooth Muscle
3. Cardiac Muscle

All-or-None Principle - A muscle fiber will either contract completely or not at all.