Only people who do not understand physiology turn to supplements for help. You don't need an energy booster. I've been working out for 40 years and never taken any "booster" because none exist and the whole concept comes from ignorance and marketing strategies from supplement makers designed to increase profits and dump more crap on the market. You cannot boost your "energy" because what you're experiencing is either pathology, dietary problems, or mental self defeat.

Exercise is supposed to make you feel fatigued. However, if you have considerable experience with a routine and know for a fact that you are finding it increasingly difficult to accomplish what you have accomplished with relative ease in the past you need to look at your health and/or your diet.

The most common reason for a lack of energy is sickness...usually something transient such as a virus. However, if the problem of fatigue lasts more than two weeks and you have no other symptoms, then consider your diet.

Calories are energy and give you the energy you need. It you cut out nutrition you may rob yourself of ready calories which can create premature fatigued if you have depleted glycogen stores and have to use body fat and catabolized cells for energy.

If you're certain you're in peak health and are eating properly and have not increased your physical demands inside and outside the gym, then ask yourself if you're defeating yourself psychologically. Rigorous workouts are as mental as they are physical. I used to use autohypnosis to help get my motivation up for very long workouts. It worked like magic but took too long to acquire the skill and to perform the induction and suggestions to make it a long term remedy. Eventually I learned to psych myself up without it and have not used it since. That process was what I regard as just getting to "know my own mind" better. It did, however, help me get over what was no less than laziness or lack of motivation.

We are all capable of much more than we know. There are no quick fixes for subconscious mental self defeat and supplements can only be placebos at the most. It requires you to convince yourself you're more capable than you know. However, for me, getting to the gym was 90% of the battle. If I began working out and after my warm up and a few sets of lifting I still felt weak or lacking in energy, I would assume I was ill and quit. That rarely proved to be the case and most of the time I would feel much better after the warm up. Once I came to fully understand that, I had no problems with motivation and have not since. That was about 20 years ago.

Supplements are not approved by the FDA, are virtually unregulated, do not have the protections afforded foods and drugs, are not recommended by the US National Institute of Health, do not require any testing, are often contaminated, may not even be what the label says, usually contain cheap ingredients, are often over priced scams, have been known to be dangerous, and can have numerous adverse or unwanted side effects so they are not an answer for anything unless deemed necessary by a physician. Energy booting drinks are just high priced drinks loaded with caffeine or sugars and sometimes ephedra (prohibited in the US)...cheap ingredients which can be found elsewhere and may be a quick fix but are not a real and lasting solution.

Good luck and good health!!

♠

Read this --> http://www.cspinet.org/nah/09_07/mfj_supplement.pdf