Freestyle training involves creating your own exercises and altering workouts based on how your body feels, rather than following a set routine. It incorporates changing your workout as needed, experimenting to find what works best for your body, and including different training styles. Freestyle training allows for creativity but may not work for everyone as it lacks structure and could lead to workouts that don't focus on what is most effective. It is best suited for experienced gym-goers who can be both creative and disciplined with their workouts.