Although half reps are often considered "ego lifting", they can be done safely for fitness benefits! Not to mention - "full" range of motion is often a bit arbitrary. For example, full push-ups can stop with your upper arms parallel to the ground, when your chest touches the ground, or even deeper if you're elevated. Just make sure you can control the weight (or resistance) in that range of motion and try to avoid stabbing pain! Pain and lack of control are signs you might want to use less wei