What are signs you are not getting enough deep sleep?

You may not be getting enough deep sleep if you wake up feeling unrefreshed even after a full night of sleep, feel groggy or have difficulty shaking off grogginess in the morning, or struggle with brain fog and poor concentration during the day. Other signs include frequent mood swings, irritability, increased anxiety, and a weakened immune system leading to getting sick more often. You might also notice poor memory, difficulty learning new information, increased cravings for sugary or high-carb foods, and low energy throughout the day. Physical symptoms like muscle soreness that lingers longer than expected and heightened sensitivity to pain can also indicate insufficient deep sleep.