Chest Exercise · Barbell
Biomechanical cues verified by the PlanWorkouts Science Review Board under CSCS editorial oversight; see our editorial standards.
The Floor Fly (with Barbell) is a targeted isolation chest movement designed to train the Pectorals with direct engagement of the Triceps.
Single-joint horizontal adduction isolating the sternal and clavicular pectoralis fibers without triceps tricep fatigue limiting set termination. Executing this with strict form maximizes muscle fiber recruitment while protecting joint structures.
Quick Exercise Facts
Target Muscle Activation
Doing a fly on the floor rather than a bench limits the range of motion — the elbows stop when the upper arms hit the ground — which is actually a safety feature, since flat-bench flys are one of the easier ways to strain the shoulder by going too deep. Using a barbell instead of dumbbells is unusual for a fly and changes the wrist and grip demand noticeably.
How to Do the Floor Fly (with Barbell)
- Lie on your back on the floor with your knees bent and feet flat on the ground.
- Hold a barbell overhand, arms pressed straight up above your chest.
- With a slight bend in your elbows, lower the bar out to the sides in a slow, wide arc.
- Continue until your arms are roughly parallel to the floor and you feel a stretch across your chest.
- Pause briefly, then contract your chest muscles to bring the bar back up to the start.
- Perform for your targeted rep count, focusing on a deliberate tempo and maximum tension in the pectorals.
Recommended Sets & Reps by Training Goal
65–75% 1RM · 60s rest
50–60% 1RM · 30–45s rest
Controlled 3s eccentric · 60s rest
Biomechanical & Joint Load Cues
Single-joint horizontal adduction isolating the sternal and clavicular pectoralis fibers without triceps tricep fatigue limiting set termination.
Common Mechanical Mistakes & Form Errors to Avoid
- Bending Elbows into a Press: Excessively bending elbows into 90 degrees during flyes turns the movement into a press, recruiting triceps instead of isolating pectorals.
- Overstretching the Shoulder Capsule: Dropping arms too far behind the torso plane strains the anterior capsule without adding meaningful pec activation.
- Rushing the Converging Squeeze: Failing to pause briefly at peak contraction in front of the chest misses the maximal short-muscle fiber recruitment.
Proper Breathing Patterns & Core Engagement
Inhale as arms open into full chest stretch; exhale as hands converge in front of the chest.
Add the Floor Fly (with Barbell) to Your Custom Workout Routine
Build a personalized, science-backed workout plan matching your training goals, equipment access, and schedule.
Injury Modification & Joint Safety
Do not overstretch past comfortable range in the bottom position if you have a history of anterior shoulder subluxation or AC joint sprain. If joint irritation persists, immediately stop and substitute this movement with another exercise from the Chest exercises category.
Muscles Worked
The Floor Fly (with Barbell) primarily targets the Pectorals, with Deltoids as the primary synergist muscle group, along with the Triceps.
More Chest Exercises
Archer Push Up
Assisted Chest Dip (kneeling)
Assisted Seated Pectoralis Major Stretch With Stability Ball
Assisted Wide-Grip Chest Dip (kneeling)
Band Bench Press
Band One Arm Twisting Chest Press
More Pectorals Exercises
Barbell Bench Press
Barbell Decline Bench Press
Barbell Decline Pullover
Barbell Decline Wide-Grip Press
Barbell Front Raise And Pullover
Barbell Guillotine Bench Press
Equipment Alternatives
Don't have barbell? These target the same pectorals with different equipment.
Chest And Front Of Shoulder Stretch
Behind Head Chest Stretch
Cable Bench Press
Chest Stretch With Exercise Ball
FAQ
- What muscles does the Floor Fly (with Barbell) work?
- The Floor Fly (with Barbell) primarily targets the pectorals as the primary agonist. Synergist assistance is provided by the deltoids along with the triceps. Maintaining strict biomechanical alignment ensures maximal tension remains focused on the intended muscle fibers rather than shifting to surrounding stabilizer joints.
- What equipment do I need for the Floor Fly (with Barbell)?
- The Floor Fly (with Barbell) is performed using a barbell. Ensure all equipment is securely positioned with collars or safety pins locked before loading working sets. If you train in a home gym or minimal setup, explore our equipment-free and resistance band alternatives below.
- What is the most common form mistake on the Floor Fly (with Barbell)?
- The most frequent error is bending elbows into a press: Excessively bending elbows into 90 degrees during flyes turns the movement into a press, recruiting triceps instead of isolating pectorals.. Controlling the 2 to 3-second eccentric lowering phase ensures maximal hypertrophic stimulus while shielding connective tissue.
- How many sets and reps should I perform on the Floor Fly (with Barbell)?
- For muscle growth and density, execute 3 to 4 working sets of 10 to 15 controlled repetitions with 60 seconds rest, emphasizing a deep stretch and deliberate peak contraction on every rep.
- What's a good alternative to the Floor Fly (with Barbell)?
- If you don't have access to a barbell, the Chest And Front Of Shoulder Stretch targets the same pectorals using body weight instead. This alternative replicates the same joint angle and movement plane while allowing you to train effectively with different available gear. You can also substitute it seamlessly in our free Workout Plan Builder.