General:
* Healthy: In good physical condition
* Strong: Having physical power
* Fit: Having a good level of physical fitness
* Active: Engaging in physical activity
* Agile: Able to move quickly and easily
* Vigorous: Full of energy and strength
* Athletic: Having a good physique and physical abilities
* Conditioned: Physically prepared and trained
* Robust: Strong and healthy
* Well-being: A state of good health and happiness
Specific aspects of fitness:
* Muscular: Relating to muscles and strength
* Cardiovascular: Relating to the heart and blood vessels
* Flexible: Able to bend and move easily
* Endurance: The ability to sustain physical activity
* Strength: The ability to exert force
* Power: The ability to exert force quickly
* Balance: The ability to maintain equilibrium
* Coordination: The ability to move different body parts together
* Agility: The ability to change direction quickly
* Speed: The ability to move quickly
Positive connotations:
* Energetic: Full of energy and enthusiasm
* Dynamic: Full of life and activity
* Vibrant: Full of life and energy
* Motivated: Driven to achieve fitness goals
* Empowered: Feeling confident in one's physical abilities
* Resilient: Able to bounce back from challenges
Negative connotations:
* Overtrained: Excessively exercising, potentially leading to injury
* Sedentary: Lacking physical activity
* Unhealthy: Lacking physical fitness
* Weak: Lacking strength
* Frail: Weak and delicate
These are just a few examples, and the specific words you choose will depend on the context in which you are using them.