Jason has been eating well and exercising regularly for the last six months in an attempt to live a healthier lifestyle. in that time his weight has dropped significantly. now, he feels unable to lose any additional weight. he has increased his exercise and continues to eat well, but his weight remains stable. it is possible that jason's is at his current weight.

35 cubic feet of dirt if it's digging a burrow

Well if you pick a machine to work on and that's gonna be your exercise if you don't stick to that machine your muscle strength your muscle mass rather will change because you haven't been doing it you change something in your exercise routine which changes your body's form of dealing with things for example you might become weaker or stronger depending on what kind of exercises you do in whether or not the machine you picked actually your muscles grow.