HealthGlobal issuesCan you tone muscles with a towel?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issuesKirstin Schumann01/05/2024January 5, 2024Fitness trainer Tim Bertko says no gym equipment is needed in the "smallest gym in the world."https://p.dw.com/p/4afXBAdvertisement