They're trying to build muscle what you’re trying to do is send a message to your body that the amount of muscle currently have is inadequate to meet the man said to environment displacing out and we do that by exposing your muscles to a stress tension that is greater than what they’re accustomed to during day-to-day activity we're trying to say the body this a lot of muscles  Formula T-10 inadequate to dote job that it has to do and he talked about intensity the odd difficulty level and mentioned going to failure earlier if you're working your muscles against the level of resistance working and I guess uh... something that is not so difficult something that they're accustomed to you're not sending a message to your body that it needs to produce an adaptation if it is straps that is not greater than what the body normally counters there's no benefit there's no reason to improve the body's capability to adaptor capability to handle that stress and a lot of ways it's like getting a suntan if you were to go outside a cloudy day so the middle of January and you have a typical level someone not too intense not they're really low either not enough that’s been stressors enough is going to stimulate any kind of production of tam same kind of thing is the case.