Г220
ТЯЖЁЛАЯ ГОЛОВА у кого (от чего)
VP subj. with бытье)
s.o. has a feeling of sluggishness, heaviness in the head as a result of fatigue, indisposition, intoxication
etc: голова у X-a тяжёлая = X's head is (feels) heavyX's head is (feels) like leadX's head feels as if (like) it weighs a ton.