Jake - you don't have to get sacked by Jared Allen to have a swollen knee. Plenty of standard in-studio training, such as running, elliptical, squats, stairs, lunges, jumps, etc all use those leg muscles and thus require repeated bending and extending of the knee joint. Did you try a new move? Longer sets/cardio? Heavier weights? Did you stretch? Have you done the same exercise or routine over and over again? New stress and overuse of the same muscles can certainly cause muscle fatigue and joint pain. Muscle imbalances you may not even be aware of, such as super-strong quads/weak hamstrings & glutes frequently are the culprit. I apologize but I'm unable to be more specific without more info. I wouldn't freak out as this is normal, but's worth retooling your program to strengthen weaker muscles to reduce stress on joints both in and out of the gym. Hope that helps.
WHITNEY M COLE Personal Trainer, Pilates Practitioner & Nutrition Counselor Diet.com Fitness Expert, Wellsphere Health Maven email@example.com www.whitneymcole.com
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