That heavy feeling right after you wake up is called sleep inertia. You feel tired, maybe a little disoriented, and not quite ready to hit the ground running.
There are many possible causes of crackling in the ears, including impacted earwax, eustachian tube dysfunction, and Ménière's disease. Learn more here.
We are not certain why exercise is helpful for PMS but studies demonstrate that exercise can release 'happy' hormones such as serotonin and endorphins, which.