You can do a variety of interval training exercises for 12 year old children. These include stair stepping, jumping rope, jogging, walking, and lunges.
Yes there are machines that can help you achieve your weight loss with interval training. High intensity interval training can be done on elliptical machines or on rowing machines.
Steady state cardio (such as running, jogging, or brisk walking) is not the best way to get fit. Interval training is better: sprint, rest, sprint, rest, and so on. If you want to get fit fast and have your physician's permission in advance to do high intensity interval training, that's the way to go. .
2 years.
Only if she needs it, otherwise, it is not needed. She will wear one for12+years once she does need one. Why rush it? It doesn't mean that she is grown up.
if she takes training
The year is interval scale (no natural zero); your age is ratio.
Tropical year
A potty training song is a song that helps kids learn how to use the potty properly.
A light year is considered a distance and not a time interval because it is an astronomical unit of length equal to just under 10 trillion kilometers. A light year is a measure of distance and not time.
I'm a Zumba instructor and on my training course they advised to try and keep your classes to 16+. There are Zumbatonic classes that are for kids.
Year of birth is interval level of measurement; age is ratio.
Something which happens every second year is termed biennial