Why do we have different measures of energy?

whats the difference between kickboxing freestyle and muai thai?

I'm from the US, what does it mean if someone weighs "8 stone and 5 pounds"? Is that really a common weight measurement in th...

in england the average height for a woman is 5'4 ... and for a man is 5'9 is this different for different countries ... ?

What are the measurements(I.e. Waist/hip/breast) for an american size zero and size two?? Just curious.

Are these measurements normal for a 15 year old girl? Bust:34 waist:26 Hips: 31

What waist measurment are you if your size 00?

Can a Rockstar Energy drink break down the shell of a egg if it sits in it overnight?

I am 37 years old, 5' 6 in, 153lbs and my measurements are chest: 37 in, waist 35 in and hips 41 in. The question is what are...

girls ;; I was just wondering like what is your measurement around the middle of your butt? & the measurement around your bel...

Whats a good way to get energy to exercise everyday two or three times a day?