Subjects were classified as active if they reported participating in 40 minutes of moderate intensity exercise at least three times a week for the previous six months.

Results revealed that vocabulary learning was 20% faster when it took place after the high intensity exercise compared to the low intensity and sedentary conditions.

Get at least 30 minutes of moderate intensity exercise on most days of the week.

A few cycles of high intensity exercise are needed to trigger the growth of bone.

During high intensity aerobic exercise, almost 100% of the energy is derived from carbohydrates, if an adequate supply is available.

"Start slowly and build up to 30 to 60 minutes a day of low-to-moderate intensity aerobic exercise," she says.

The high intensity exercise should be done at near maximum intensity.

Working memory performance may also be increased by high intensity exercise.

During average intensity exercise, sweat losses can average up to 2 litres of water/hour.

Muscular hypertrophy can be increased through strength training and other short duration, high intensity anaerobic exercises.