When we are asleep, Isn't half of brain asleep too, and the other half steel working? Well does the brain switch from one side to the other? And if not doesn't that one side get really tired? please answer I'm just curious :)

If you are having a hard time lifting something, you should arch your back. a. true b. false

Asap during the past few weeks or months, have you noticed any exercises that have become too easy for you? do you think you need to increase the intensity in any of the three exercise areas in your workouts? evaluate your exercise progress in the three exercise areas (cardiovascular, resistance, and flexibility) and list what modifications, if any, you may need to make in your exercise routine.

Match each nutrition monitoring survey to its description. csfii nfcs nhanes what we eat in america