A typical CrossFit class runs about 60 minutes and follows a predictable structure: a dynamic warm-up, a strength or skill segment, and a high-intensity conditioning workout that usually lasts between 5 and 20 minutes. The format stays consistent from gym to gym, but the exercises change daily, which is why every session is called the “WOD” (workout of the day). If you’ve never walked into a CrossFit gym (called a “box”), here’s exactly what to expect from the moment you arrive to the moment you collapse on the floor afterward.
The Warm-Up: 10 to 15 Minutes
Every class starts with a coach-led warm-up designed to raise your heart rate, loosen your joints, and rehearse movement patterns you’ll use in the main workout. This isn’t a few minutes on a treadmill. The standard CrossFit warm-up includes a mix of stretching, bodyweight squats, sit-ups, hip extensions, pull-ups, and dips, all done at moderate effort. You might cycle through a walking lunge with an overhead stretch, goblet squats, hollow rocks, and push-ups.
If that day’s workout involves a barbell, the warm-up will also include progressively heavier sets of whatever lift you’re about to do. A day with overhead pressing might start with an empty barbell for several sets before you add weight. The whole point is to prepare your body for what’s coming, not to tire you out before the real work begins.
The Strength or Skill Segment: 15 to 20 Minutes
After the warm-up, most classes dedicate time to building either strength or a specific gymnastics skill. On a strength day, you might spend 15 minutes working up to a heavy set of five back squats or three deadlifts. On a skill day, you could practice handstand holds against a wall, double-unders (spinning a jump rope under your feet twice per jump), or muscle-ups on gymnastic rings.
CrossFit pulls from three distinct categories of movement. Weightlifting covers barbell and dumbbell work like squats, deadlifts, cleans, snatches, and presses. Gymnastics includes any bodyweight movement: pull-ups, push-ups, handstands, ring dips, and rope climbs. Metabolic conditioning (often just called “cardio”) means running, rowing, cycling, or jumping rope. A well-programmed week rotates through all three, and this strength or skill block is where you build the raw capacity to use them.
The WOD: 5 to 20 Minutes of Intensity
The conditioning workout is the centerpiece of every class, and it’s shorter than most people expect. An ACE-sponsored study found that participants completed benchmark CrossFit workouts in under 12 minutes, burning an average of about 116 calories despite the brief duration. Men averaged around 170 calories on one workout that took roughly 8 minutes and 23 seconds. The intensity, not the length, is what makes it effective.
WODs come in several common formats:
- AMRAP (As Many Rounds As Possible): You get a set time, say 12 minutes, and a list of movements with specific reps. You cycle through the list continuously and your score is how many rounds you complete. For example: 12 minutes of 10 push-ups, 15 squats, and 20 sit-ups.
- For Time: You get a set amount of work and race the clock. An example is 21 thrusters, then 21 pull-ups, then 15 of each, then 9 of each. Your score is how fast you finish.
- EMOM (Every Minute On the Minute): At the start of each minute, you perform a prescribed number of reps. Whatever time remains in that minute is your rest. If you need to do 10 kettlebell swings each minute for 10 minutes, finishing in 30 seconds gives you 30 seconds of rest before the next round.
- Tabata: Eight rounds of 20 seconds of all-out effort followed by 10 seconds of rest, totaling four minutes. It’s brutally simple and often applied to a single movement like rowing or air squats.
A coach starts the clock, and the room moves together. You’ll hear countdowns, encouragement, and corrections. Coaches watch for technique breakdowns, especially when fatigue sets in, and will cue you to fix your squat depth or straighten your back mid-workout.
What the Exercises Actually Look Like
On any given day, you might row 500 meters, do 20 wall balls (squatting with a medicine ball and throwing it at a target on the wall), then do 15 kettlebell swings and 10 burpees. The next day could be completely different: heavy deadlifts paired with box jumps and a 400-meter run. The constant variety is the defining feature. You rarely repeat the same workout within a month.
The equipment reflects this variety. A typical CrossFit box has barbells with bumper plates, kettlebells in a range of weights, pull-up rigs, gymnastic rings, rowing machines, plyo boxes for jumping, medicine balls, dumbbells, and jump ropes. There are no machine circuits or cable stations. Nearly everything involves moving your own body or a free weight through a full range of motion.
Rx vs. Scaled: How Workouts Adapt to You
Every WOD is written with a “prescribed” standard, called Rx. For instance, a workout might call for 95-pound thrusters and chest-to-bar pull-ups. If you can do the workout exactly as written, you log your score as Rx. If you can’t, you scale it: lighter weight, fewer reps, or a simpler version of the movement. Pull-ups might become ring rows. A 95-pound thruster might drop to 65 pounds or even just a barbell with no added weight.
Scaling isn’t a consolation prize. It’s built into the system so that a former college athlete and a 55-year-old beginner can do the same workout at appropriate intensities. In competition settings like the CrossFit Open, scaled athletes are ranked on a separate leaderboard. In a regular class, the coach helps you choose loads and modifications that let you maintain intensity without sacrificing form.
Benchmark Workouts You’ll Encounter
CrossFit uses a set of named benchmark workouts, nicknamed “The Girls,” to measure progress over time. Two of the most famous:
“Fran” is 21 thrusters (a front squat into an overhead press) at 95 pounds, then 21 pull-ups, then 15 of each, then 9 of each. It’s done for time, and experienced athletes finish in under four minutes. Beginners might take 10 to 15 minutes with lighter weight.
“Grace” is 30 clean-and-jerks at 135 pounds for time. A clean-and-jerk means lifting the bar from the ground to your shoulders, then driving it overhead. It sounds straightforward, but 30 reps at that weight will test your grip, lungs, and willpower. These benchmark workouts reappear every few months so you can compare your times and see measurable improvement.
What the Coaching Looks Like
Unlike a regular gym where you’re on your own, every CrossFit class is coached. Before the WOD, the coach demonstrates each movement and walks through the points of performance: where your feet go, how deep to squat, where the bar should be at each phase of a lift. During the workout, they circulate the room correcting form, calling out time, and modifying movements on the fly if someone’s technique is breaking down.
CrossFit’s coaching philosophy is straightforward: teach athletes how to move correctly, watch them do it, and correct what goes wrong. The coach holds you to a standard. That means if your squats are getting shallow because you’re tired, you’ll hear about it. This level of real-time feedback is one of the biggest differences between CrossFit and working out alone, and it’s a major reason people stay.
What a Full Hour Looks Like, Start to Finish
Putting it all together, here’s a realistic example of a one-hour CrossFit class:
- 0:00 to 0:12: Dynamic warm-up. Rowing for 2 minutes, then 3 rounds of 10 air squats, 10 push-ups, and a walking lunge stretch.
- 0:12 to 0:30: Strength work. Build to a heavy set of 5 back squats, resting between sets.
- 0:30 to 0:40: WOD briefing. The coach explains the workout, demonstrates movements, and helps everyone choose their weights.
- 0:40 to 0:55: The WOD. A 12-minute AMRAP of 10 dumbbell snatches, 12 box jumps, and 14 calories on the rower.
- 0:55 to 1:00: Cool-down stretching and logging scores on the whiteboard.
The whiteboard is a CrossFit staple. Everyone’s score goes up for the day, creating a friendly competitive atmosphere. Your name sits next to the person who’s been doing this for five years, and next to someone who started last week. The shared suffering, followed by the shared record of it, is a big part of what makes CrossFit feel different from training alone.