There are a wealth of cool add-on iPhone accessories to keep us in top form that you may not know about. You can even sync a jump rope! The Tangram Factory Smart Rope PURE Jump Rope counts jumps and pairs with the Smart Gym App to be a key part of interval training. Into biking? The SmartHalo Bike System shows workout progress in real time — and includes other helpful features such as turn-by-turn navigation. Improve your overall workout and stop slouching with the UPRIGHT Go Posture Trainer that not only provides feedback but also offers exercise suggestions to improve your musculature. At the end of each set, the Masimo MightySat Fingertip Pulse Oximeter gives you not only comprehensive details on your exercise efforts but key data on workout recovery. But wait! There’s more! The Beddit 3 monitors how well you rest at night, going beyond the basics to include heart rate, respiration, snoring and even room temperature; Itunes.Apple.com.