CTF is Chicago's Premier HIIT studio. Each class is guaranteed to be different with each visit. Our trainers design each class to include interval cardiovascular routines, mobility and strength training. Open to all fitness levels, this class puts first-timers and fitness die-hards side by side to make progress at their own level together in one community. **New Check-in Protocol: Everyone is required to sanitize shoes (Healthy Sole) and hands upon entering any CTF studio. Everyone is also required to take a surface temperature reading and must wear a mask at all times. During class, we will provide everybody with their own personal spray bottle to sanitize equipment between stations. **20,000+ Visits since Re-Opening & ZERO Covid-19 Cases!