Replace caffeine with apples or fresh fruit.
In 4 to 5 days, after the body forgets about the drug, you will get an energy boost.
IF energy is what you're looking for, eat fresh fruit on an empty stomach, before any other food will be ingested. In a week, you will gain a lot of energy from this.
Learn to breathe properly and practice it 3 to 5 times a day. A golden rule is inhale for X seconds, hold for 4 x, exhale for 3x. There's not a vitamin in the world that will give you the boost proper breathing does.
Limiting protein intake is another way to get some energy boost. It's quite visible after 3-4 days of reducing protein. I'm not talking about going began or any of that crap, just eat less protein. Keep it UNDER 0.8 grams per KG of weight. Digesting protein actually robs you of energy.
IF you are working out, or doing HIIT as someone stated, it's important to do it the right way.
A lot of people train anaerobically, as in, without oxygen in the cells. This means training until you can barely breathe. That will rob you of so much energy. You need to train aerobically ( WITH oxygen ). A simple way of doing this is checking if you can talk during your workout without any problems.
If you drink milk, try to stop. There;s nothing wrong with milk per se, but it sticks to your small intestine and hinders hydration. Your body works harder to clean you up.
Sugars phuck you up too. This includes flour, especially if you go overboard with it.
Exercise your face while working. Toning face muscles will aid in better oxygenation to your brain. Doing X / O with your face is the perfect way. 5-6 sets of 15-20 reps will get the blood flowing just right.
It's what I've been doing over the last few years after reading books which address energy levels. It works. You won't be able to sleep more than 7 hours, because you will be full of energy.
