Stress can manifest itself through a myriad of symptoms. Feeling anxious, digestive issues, heart pounding / skipping beats, muscle spasm, panic, tremors and twitching, sensation of choking, tingling or numbness, teeth grinding, loss of sex drive, mood swings, chest pains, light-headed or dizziness, stiff neck & shoulders, sweating, and fatigue are just some of the physical indications that an individual might be dealing with stress.