When determining a safe amount of each nutrient to consume we can remember the following rule: % or less is low and % or more is high for a given nutrient on the label.

I believe it is 50% or less is low and 100% or more is high.

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.