Do you have to grow a beard if you shave your head? Yes. Yes, you do. In all seriousness, there's actually some science to back this up.
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Tip: Handcuff Drill
Improve your shoulder mobility with this drill.
Tip: Do No-Carb Cardio in the Morning
Don't do your cardio fully fasted, but avoid carbs. You'll protect muscle and burn more fat.
Developing a Training Philosophy
"If you put a group of the most successful strength coaches in one room and their students in another, the students wouldn't agree on any training philosophy or principle, whereas the coaches would agree on almost everything."
Tip: Stress and Heart Rate Variability
Use this tool to find out if you're recovered enough for another heavy session.