Joint bundling is a subcategory of pure bundling in which the two products are offered together for one bundled price; Leader bundling is a subcategory of pure bundling in which a leader product is offered for discount if purchased with a non-leader product, accessory or other item.
Vitamin B Helps Your Metabolism. You should balance your vitamin supplements to match your needs. A multi-vitamin is great, but if you are extremely fatigued all the time and don't get enough vitamin B in your diet, then adding vitamin B-12 will improve your flagging energy. B-complex vitamins provide you with: 1  Boosted metabolism. 2  Healthy skin.
B Vitamins. Certain vitamins specifically support healthy metabolism, the process by which your body turns the food you eat into energy. Not getting enough of any of the eight B vitamins can cause your metabolism to slow down, making it harder for you to lose weight. You may also feel fatigued with a B vitamin deficiency, so you feel you just can't fit your workout in at the end of a long day.