Knuckle Up Boxing Gym & Fitness Center Raleigh is a boxing gym and fitness center offering adult and kids boxing classes, personal training, and access to a 24-hour fitness center. The gym emphasizes coached, fundamentals-based training in a focused group setting for different experience levels, along with one-on-one coaching and a structured youth program centered on confidence, coordination, and respect. It offers month-to-month memberships and a complimentary trial class.