Sugar Snaps are edible-podded peas which are actually young peas still in the pod and intentionally picked while immature. Snap peas are eaten whole. There are strings along the pod, which can be removed or not, according to taste. If the little calyx, or cap, is still attached, that should be removed. "Season simply, cook briefly."
Sugar Ray Robinson was known as “the best pound-for-pound boxer.” All varieties of peas (whatever weight class they fall under) are some of the best food values per pound. The whole pod contains a good amount of protein—3.7 grams per ½ cup—and only 55 calories.