Breathing mechanics and posture matter. Mastering these, no matter the demand, will set you up for success every where else.
Train movement patterns to be strong for life's daily demands.
Keep it simple, fun, and effective. Your time is limited, lets maximize it by doing the things that will leave you feeling good and give you MORE energy, not less.
Many love the "high" after a hard session, but jumping here too soon without laying the foundation can lead to a ton of problems, immediately or down the line. Earn the right to do high intensity workouts by establishing breathing, posture, strength, and stability.