Grandfather Gym T-Shirt Design

I'm looking for a creative designer to make a muscle-fit, moisture-wicking gym t-shirt. The theme is "Training to be a Grandfather."

Requirements:
- T-shirt should be muscle-fit
- Made from moisture-wicking fabric
- Creative and engaging design with the theme "Training to be a Grandfather"

Ideal Skills:
- Experience in gym wear design
- Strong graphic design skills
- Knowledge of moisture-wicking materials