Cross-trainers are great for a gym workout. lifting, short runs, plyometrics, functional strength, agility, sprints, HIIT, CrossFit and studio class sessions. Reebok Nano X2 are great for lifting, Crossfit, HIIT, and have great responsiveness for a short run. Also great for Crossfit. Heel drop: 7mm Nike Metcon 7 are versatile trainers for crossfit, lifting, rope climbs, HIIT, etc. great all around trainer. Heel Drop: 4mm Altera Soltice XT is a versatile trainer for HIIT, studio classes, plyometrics and moderate lifting. Best of all, zero heel drop. Heel Drop: 0 mm. Xero 360 is a great minmal barefoot trainer with good upper durability for rope climbs and everything else. Do everything from Crossfit to casual wear. lift heavy and with zero heel drop and low stack, deadlift as much as you can. can go for a long run in these. Outsole has a 5,000 mile warranty. heel drop: 0 mm #LTKfit