This is perhaps the MOST important thing you can ever learn about training.
It's NOT to do with the best exercises,
NOT what you should be eating,
and definitely NOT about what the best training programs are.
I'll tell you what it is though... TRAINING PRINCIPLES.
Without these, you can chuck any potential progress and gains out of the window. These keep you on the path, keep your priorities right, and help you build a STRONG base.
BASE TRAINING PRINCIPLES.
Training principle 1 - STRETCH AND MOBILIZE
Training principle 2 - LEAVE THE EGO AT THE DOOR
Training principle 3 - ALWAYS WARM UP
Training principle 4 - FOCUS ON YOUR MAIN LIFTS
Training principle 5 - KEEP A HIGH INTENSITY
Sticking to these is a MUST! They are NON-NEGOTIABLE.
Without following these 5 simple rules you are running head-on into an injury, overtraining and fatiguing.