Your reason for doing something is your motive. Your motive to go to school every day is to learn. Or maybe the thought of your parents' anger and a run-in with the truant officer is motive enough. The word motive comes from the Latin words motivus, meaning moving, and movere, meaning to move. Think of motive as the thing that moves you to act.
What is the average muscle mass? Muscle mass is important in maintaining a healthy body. Depending  on age and physical activity level, the average muscle mass  percentage lies between 38% and 54% for men a â¦ nd between 28% and 39%  for women.Answered. I don't know the average, but I am 26, and workout 4 times a week doing lots of cardio (an hour or more). I have 24% fat and 38% muscle. I think the average woman is 25- â¦ 30% muscle.
You may see these changes start as early as your 30s, but most people see the biggest changes between their 40s and 50s. 1  A recent study concluded that total muscle mass decreases by nearly 50 percent for people between the ages of 20 and 90. On average, people lose about 30 percent of their strength between ages 50 and 70, and another 30 percent of whatâs left per decade after that. Generally, people lose about 1 percent of their lean muscle mass per year after age 40. The following four types of muscle weakening (called atrophy) become more common as people age, and each type responds differently to strength training.