I took a few minutes to research internships and employment while proctoring the Exercise Science senior assessment exam, and found lots of exciting opportunities!
Visit http://www.exercisejobs.com/ for fitness industry employment announcements.
Visit http://www.phfr.com/ for health/fitness internships and employment announcements.
Lots of interesting opportunities here: http://www.internships.com/summerinternship/nih
NIH summer internship in biomedical research: https://www.training.nih.gov/programs/sip
Fitness Internship in Washington, DC: http://www.internships.com/posting/Fitness-Internship-I1201 and in Rockville, MD: http://www.internships.com/posting/Fitness-Specialist-Intern-I1511
Social Media Internship with DC based Fitness Management company: http://www.internships.com/posting/Social-Media-Intern-for-DC-based-Fitness-Management-Company