Against the background of beriberi can be observed breakdown and decline of energy. Take vitamin complexes with high iron content, to exclude the possibility of anemia. If you are not sure which product you choose, consult with a specialist about this.
Reduced immunity provokes drowsiness. But we should not immediately run for immunomodulators, no, just eat more dairy products or take drugs containing lactobacilli and bifidobacteria bacteria.
Start physical activity. Jogging or doing exercises, go to the gym or the pool - it does not matter. The main thing is that the blood does not stagnate, and actively circulated and enriched with oxygen, then you will feel a surge of strength.
Take a sedative herbs to fall asleep faster and sleep better. Insomnia helps to reduce energy, which in turn implies weakness and lethargy. Also try to protect themselves from stress and from heavy loads on the nervous system.
If you have not started to feel better, then go to the therapist. Invigorating energy drinks or coffee to drink in large quantities is meaningless. It is necessary to find and eliminate the cause of fatigue. In some cases only able to help shrink. Especially if the problem is in the nervous exhaustion. But do not hesitate to contact doctors.