Because this type of training requires your body to work harder for shorter periods of time, the body also has to work harder to resume normal levels of activity. (healthstatus.com)
They give a 60 percent chance that the tornado season will see normal levels of activity, a 30 percent chance that it will be below normal (as it has been so far, thanks to pervasive cold weather in the central and eastern U.S.), and a 10 percent chance it will be above normal. (scientificamerican.com)
A fitness tracker is intended to record the wearer's normal level of activity for the purpose of identifying (infinitelifefitness.com)