Yeah efficiency is important. I use my wrist mostly also I use my pick and fingers sometimes to skip strings and also 'economy picking' two downstrokes on two adjacent strings rather than alternate picking, not to mention sweep picking. Eventually your brain does it without thinking.

For diet I do plant-based low protein, people think they need lots of meat and powders which is untrue and not healthy. I'm 48 so I think about heart disease, etc and learned about saturated fat and cholesterol. :)