concentric contraction, a common form of muscle contraction that occurs in rhythmic activities when the muscle fibers shorten as tension develops. Compare eccentric contraction. See also isotonic exercise.
1 Multiply by 2/3: Next you want to multiple your weight by 2/3 (or 67%) to determine how much water to drink daily. 2  For example, if you weighed 175 pounds you would multiple that by 2/3 and learn you should be drinking about 117 ounces of water every day.
Starting off with weight, itâs obvious that the more you weigh, the more water you should consume. Studies have shown that by drinking 50 to 75 percent of your body weight in ounces is an accurate amount. If you do not consider yourself an active person, then 50 percent would be more in your range. For example, if you weigh 120 pounds, you should drink at least 60 ounces of water each day. However, if you work out daily or you are involved in other activities then you should drink more towards 75 percent of your body weight. You will need more water to keep your body hydrated.