Fitness Challenge WinnersBy Danger is my middle name in LivingHealth1,80817 Check out these winners of the Fitness Challenge for some great ideas for getting and staying in shape! https://www.instructables.com/contest/fitness/ Check out these winners of the Fitness Challenge for some great ideas for getting and staying in shape! https://www.instructables.com/contest/fitness/ DIY Bike Rollersby Sky-Monkey in BikesImprove Strength, Tone Muscle, and Increase Flexibility + Explosiveness: Dual-Handle Weight Bagby butterbeans in HealthAdjustable TRX-style Suspension Work Out System - Less Than $20by FryGuy2086 in HealthDIY Rowing Machineby HHarry in HealthBalance Boardby RcubedplusA in HealthSlacklineby woofboy111 in Sports[Collegiate Exercise] Dorm Room Fitnessby Brennn10 in HealthNavy Seals Ab Workoutby Emsaid in HealthHow to Lose 100+ Pounds and Keep It Off for Lifeby MissFit9 in HealthIntermediate Push Up Matrix!by ReactMethod.com in HealthPushup Machineby splazem in Health