If you haven't already, you will probably experience leg cramps at some point in your life. A leg cramp is a sharp, sudden contraction or tightening of the muscle in the calf, which usually lasts a few seconds to a few minutes. To keep leg cramps at bay, make sure you're nourishing your body and getting enough rest.
Alternately or alternatively. Alternately means switching between two alternatives, alternatively means doing something different. I love pizza and Mexican food, I eat them alternately. Means Monday I ate pizza, Tuesday tacos, Wednesday pizza again, Thursday burrito, Friday went to the Hospital to get my arteries roto-rooted.
either or. The definition of either or is an expression used to indicate that there are only two options or that both of two options are acceptable or equivalent. An example of either or is when you are offered either spaghetti or cereal for dinner and are different between the two so you say either or to indicate that both would work.