The best way to build muscle is to do workouts with out lifting weights.Before you workout be sure to stretch.
121 pounds is equals to 55kg . As for 13 year old boy . You can say its healthy , as it can be counted as muscles if you have great body shape or quiet good muscles build . As muscles are heavier then fats .
do 25 pushups a night
A 14-15 year old girl with big muscles should weigh between 135-160 pounds. A 14-15 year old boy with big muscles should weigh 145-195 pounds.
It really depends on the boy's height, but the average 16 year old boy weights about 150 - 180 pounds. Of course, a boy who is 6 feet tall and has large muscles would way at least 200 pounds.
No.
Is that the African or European five-year-old boy? Also, is the five-year-old boy laden or unladen? The average foot size of a laden five-year-old boy can increase from one-half to one full size, depending on the time of day of the measurement. Measuring later in the day will result in a larger average foot size for both laden and unladen five-year-old boys. However the difference will always be lesser for unladen five-year-old boys.
Yes.
Yes
No.
The height of a 2.5 year old boy will vary depending on genetics. The average of a 2.5 year old boy is around three feet.
Doing sit-ups and crunches is the tried and tested exercises for developing abdominal muscles.
Dump Her.