Hey there, if your journey towards physical restraint wasn't difficult then it wouldn't be worth celebrating the result right? Adding a small amount of unpredictability to any sort of fitness plan constantly fires up the challenge and surely warrant emoticon implying how hard it increases to accomplish. Goodluck pushing through the regime - with that kind of workout, buying a human-sized treadmill might not be such a bad idea :) and be sure not to confuse both weights only to shield yourself if ever hated by rowdy humans too haha