Live foods contain more electrical energy than processed foods. Also, whole foods contain vitamins and minerals, which cells need to extract energy from food. Mitochondria are the "power plants" cells use to extract electrical energy from food, and without the right vitamins, minerals and amino acids these cellular power plants can't function properly. So, start increasing your energy by eating more fresh (especially raw) fruits and vegetables and less refined sugar, white flour and processed foods. Coffee and energy drinks won't supply energy-producing nutrients, but the following supplements will.
There are many single nutrients that can help improve energy production. One of these is magnesium. Magnesium helps energy production in the mitochondria, but it also helps muscles (and nerves) stay relaxed. Relaxed muscles hold a high amount of reserve energy, and when this energy becomes depleted, muscles become tense. So, if you have tense muscles, don't sleep soundly, and are irritated or stressed by small things, you can probably benefit from taking a magnesium supplement. Most people need about 800-1,000 mg. per day.
Vitamin D3 also helps produce energy in the mitochondria. In one study, mitochondria function was shown to be depressed in a group of patients with severe vitamin D deficiency. After supplementing with vitamin D3, the same group experienced a 20% increase in ATP production in linear fashion proportional to their vitamin D levels. All patients reported a reduction in fatigue. About 90% of the population is deficient in vitamin D, especially during the winter months. Supplementing with vitamin D3 can boost your energy, strengthen your resistance to infection, and enhance your mood, bone health and cardiovascular function.
B-vitamins (Nutri-Calm) help promote energy, maintain the nervous system, support immune function, and buffer the effects of stress. For this reason, B vitamins are sometimes added to energy drinks. However, it's better to take your B vitamins as a supplement, rather than in a drink loaded with sugar and caffeine.
Vitamin B12 can be also be helpful for energy, as many people don't get enough B12 in their diet.