Defined Six-Pack: How Effective is Daily Abdominal Training?
Quelle: FIT FOR FUN (Glomex)
Many people wish for a defined, flat stomach - and train their abdominal muscles almost daily. This is not always advisable.
Quelle: FIT FOR FUN (Glomex)
Many people wish for a defined, flat stomach - and train their abdominal muscles almost daily. This is not always advisable.