When your phone never seems to stop ringing, your inbox fills up quicker than you can reply to messages, and you barely have time to eat lunch, it’s no wonder you may end up feeling stressed. Related: 7 Ways College Students Can Manage Stress Effectively Signs of stress can include rapid heartbeat, headache, muscle aches, fatigue, shortness of breath, feeling powerless, sudden mood changes, or changes in appetite. Stress may also lead to decreased work productivity and interpersonal difficulties with your colleagues.