There’s nothing better than waking up refreshed after a full night’s sleep and starting the day out on the right foot. But some days, even if you’ve gone to bed and gotten the recommended close to eight hours of sleep, you still wake up groggy. SO what gives? Here are some of the things that could be making you tired, even when you had a full night of rest.

• Waking up in the wrong phase – Our sleep is split into cycles and the non-REM stage is very deep sleep, so if you wake up then, your body won’t be as prepared to wake up as it would during an REM phase.
• Poor quality of sleep – No matter how long you actually sleep, if it’s low-quality rest, you’re going to wake up tired. Poor-quality sleep can be caused by things like sleeping with your pet, drinking too much caffeine late in the day or sleeping with too much noise in the background.
• Medication hangover – When you take certain medications that can cause drowsiness, you might still feel the effects the next morning. Talk to your doc to see if the dosage can be adjusted or the medication changed.
• Medical condition – Some medical conditions like sleep apnea can disrupt your rest and things like depression can make you feel drained, which can contribute to you feeling groggy.
• Your body clock isn’t in sync – Are you keeping a crazy schedule these days? Then your body might need more time to wake up in the morning. Having a more regular schedule can make a difference in how alert you feel in the morning. And every little bit helps, right?

Source: POPSUGAR