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.
A lot of new energy drinks on the market these days contain big doses of B12, thiamin, riboflavin, and other nutrients in the B-vitamin family. Supposedly, they give you a big burst of energy. The presence of all those vitamins also suggests that these drinks are a good source of nutrition.