The smaller the Brussels sprout, the more tender and sweet it is (go for larger ones if you want a more cabbage-like flavor). Look for a vibrant green color and whole, intact sprouts without a lot of spots that are nice and firm. Once you get them home, store in a plastic bag in the refrigerator for up to three days.
Taking vitamin supplements will boost your energy level only if you are deficient in them. In particular, our bodies need B vitamins to release the energy in foods. The family of B vitamins includes B1, B2, B3, B5, B6, B7, B12 and folic acid.
But unless you have a vitamin B-12 deficiency, vitamin B-12 injections aren't likely to give you an energy boost. Metformin (Fortamet, Glucophage, Riomet) is a drug sometimes used as part of a weight-loss strategy for people with type 2 diabetes. Vitamin B-12 deficiency can be a side effect of this drug.