How do I get big, with one simple trick?

Simple Trick = Live healthier

Explanation of "simple trick" -
1. Eat more, especially breakfast. Supplements don't replace real food and crap diet.
2. Keep a regular sleep schedule of 7-9 hours nightly.
3. Ensure you have a stress outlet that is NOT exercise.
4. Don't neglect your legs - Squats are best for boosting GH in the body.
5. Find a legit reason to "get big". "Because girlfriend..." isn't one, especially while active duty and running long distance 2-3 times a week.
6. Focus on strength before mass. Strength helps build more mass and power.
7. Switch your workout plan at least bi-monthly.

Here's more of my thoughts on this. Feel free to ask more questions.

http://golivelively.com/2015/07/27/myfatlossthoughts/
http://golivelively.com/2016/03/14/5x1_for_strength/
http://golivelively.com/2015/08/10/strength-training-basics/

Unless your gf works out with you and shares your goals for a healthier stronger lifestyle, your really just working for dead weight. I opened a nutrition juice bar and partnered with a gym when I was married. I thought I could make a family thing out of it! Sometimes other people have different agendas and end up putting us further back then when we started.
Make changes for yourself and those that want to be apart of those changes will follow. Those that don't, let them go and don't chase em! There's a reason most doors only open one way.
Good luck, and yea take healthy supplements or increase food intake. If you increase, your body increases it's take in order to support the change. physical burn and damage can take years to recover from.

I agree getting bigger for your GF is bad motivation. Are you happy with yourself right now? If so good. Don't change for people...only for yourself...then it will have lasting effect.