gives you more than just an opportunity to catch up on the latest gossip — it's a chance to improve your fitness and make your workouts a lot more fun. “Having a partner makes every workout more motivating — you have someone to lean on and who can give you feedback”, notes Biggest Loser trainer Jen Widerstrom, author of . Workout partners Ida Lundgren and Bianca Van Damme have names you might recognise — their fathers Dolph and Jean Claude paired up in the action classic , and each has his own storied film career. (Bianca's mother, Gladys Portugues, is a former competitive bodybuilder.) Both women have kept their actionstar lineage intact with regular workouts and martial arts training.