Sometimes Feel like my tongue is heavy and speech is slurred. Have checked for stroke of any kind but it has come out negative. Sometimes feel distraught and restless as well. Was initially diagnosed as having sleep apnea but have been using a CPAP now and sleep has improved to normal levels. Sometimes feel weakness in muscles especially the thigh and calf muscles. Also have lower back pain and MRI shows a bulging disc causing nerve's to be crushed . Would like to have a answer on why the tongue is heavy sometimes