Mental health advice? Hoping someone properly qualified is the one giving the advice in his book. Remember when Marley was newborn, Joe was tired and he insisted that having a newborn was not an excuse to not exercise? Then he had to back track on his ludicrous advice as he realised sleep was more important than exercise. Imagine being a new sleep deprived parent being shamed into exercise, it's bad enough for your mental health to listen to that advice, but then to try and follow it and deprive yourself of sleep is even worse.