Men, What's A (relatively) Simple Trick That Helped Your Workouts/physique?

When I turned 30, I decided I needed to start working out on a regular basis for my general health. I wasn't going to necessarily loose weight or become lean or muscly, but if those things happened, great! When I'm on my gym-game, I'm pretty consistent, 3-4 days a week for 60-90 minutes. Usually spent between some basic strength training for my upper body (push-ups, situps, free weights for arms and chest, etc.), and at least 30 minutes cardio in the target heart rate range (bike, treadmill, elliptical, etc.). I've gone semi-consistently for a couple years now and, while I'm happy with my overall health, I was sort of disappointed that I wasn't seeing progress in my muscle development. I chalked it up to my lack of consistency (months working out followed by a month with no working out).

So, I started doing some research and realized I was missing sufficient PROTEIN in my diet! Depending on what source you look at, we need about .8 grams of protein per 1 kilograms of weight. I'm a big guy (6 foot 2, 240 lbs) and when I was really into the gym I was also dieting focusing on a calorie deficit. A month or so ago I started using protein powder and focusing on how much protein I was eating in a day (shooting for about 90g/day) and the changes have been pretty significant (with the same workouts I've been doing). I always assumed protein powder and macros was for guys focusing on building significant muscle, not just your average gym-goer. I can't help but wonder what my body would look like now if I had been eating enough protein over the last 4-5 years.

So that's my tip. This might be "duh" to some/most of you, but it's been eye opening for me. And very easy to implement.