Now that users finally have objective numbers for each performed rep and set in the past, you can know at exactly what speed you usually move certain weight (i.e. you know that you can bench 135lbs at 0.75m/s. If today you're feeling strong, you should try to set a target speed a bit higher than that, or increase your weight by 5-10lbs, and try to maintain that speed.) The live trainer will show a blue color if you pass the speed target, or orange if you don't. You'll know in real-time. By experimenting with your own load/speed relationship, you can uncover tons of lifting habits you otherwise wouldn't be able to pay attention to.