This new piece of wearable tech makes your workout more effective by giving you real-time feedback as to how hard your muscles are working. Using biosignal sensors woven right into the chafe-free material, Athos’ futuristic shirt senses activity within your muscle fibres. This information is fed into a companion app that tracks which muscles are getting the most benefits, making it easy to spot strength imbalances and ensuring you’re putting in maximum effort. It can also put you on a strength-building regimen, tracking your improvement as you grow as an athlete.