Skip to content
Crucible Fit
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Pricing
Get Crucible
  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing
  • FAQ
  • Training Guides
Get Crucible
Crucible Fit

A daily functional fitness test for iPhone, Apple Watch and Android. Stations, reps and the Crux, sized to your readiness and your kit.

Download on the App StoreGet it on Google Play

Crucible Fit

  • The Crucible
  • The Week
  • Programs
  • Train Your Way
  • Apple Watch
  • Pricing

Explore

  • Training Guides
  • Exercise Library
  • FAQ
  • Press
  • Support

Legal

  • Terms and Conditions
  • Privacy Policy
  • Consumer Health Data Notice

CRUCIBLE FIT™ and Crux by Crucible Fit are trademarks of Crucible Fit, LLC.

© 2026 Crucible Fit, LLC. All rights reserved. Apple, the Apple logo, iPhone and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Google Play and the Google Play logo are trademarks of Google LLC.

  1. Home
  2. /
  3. Exercises
  4. /
  5. Chest
  6. /
  7. Fly Against Chains

Exercise guide

Fly Against Chains

  • Intermediate
  • Isolation
  • Rep-based
  • Chest
  • Shoulders

The Fly Again is a bodyweight isolation movement that targets the pectorals and anterior deltoids by using a flat bench to provide leverage for a horizontal adduction pattern.

Reviewed by the Crucible Fit team · Updated June 2026

Watch the Fly Against Chains demonstrationVideo and instructions for every movement are in the Crucible Fit app.

Muscles worked

Primary

  • Pectorals

Secondary

  • Serratus anterior
  • Triceps

Equipment

  • Body weight

Setup

  1. Stand facing the side of a flat bench and place your palms on the surface, positioned slightly wider than shoulder-width.
  2. Step your feet back until your body is at a 45-degree angle, maintaining a straight line from your head to your heels.
  3. Engage your core and glutes to stabilize your torso, and keep a slight, fixed bend in your elbows.

How to do it

  1. Inhale and slowly allow your hands to slide or pivot outward toward the ends of the bench, lowering your chest toward the surface in a wide arc.
  2. Lower yourself until you feel a deep stretch in your chest, ensuring your elbows do not drop below the level of the bench.
  3. Exhale and squeeze your chest muscles to pull your hands back toward the center, returning to the starting position with a controlled tempo.
  4. Maintain a 3-1-1-0 tempo (3 seconds down, 1 second stretch, 1 second squeeze, 0 seconds rest).

Form checklist

  • Keep the elbows at a fixed angle; do not turn the movement into a close-grip push-up.
  • Avoid arching or sagging the lower back by keeping the navel pulled toward the spine.
  • Ensure the movement occurs at the shoulder joint, not the elbows or wrists.
  • Keep your neck neutral by looking at a spot slightly in front of the bench.

Pro tips

  • Focus on the 'mind-muscle connection' by imagining you are trying to hug a large barrel as you bring your hands together.
  • At the top of the movement, actively protract your shoulders slightly to maximize the contraction of the serratus anterior and inner pectorals.

Make it harder

  • Elevate your feet on a second bench or a stable platform to increase the amount of body weight shifted onto the upper body.
  • Incorporate a '1.5 rep' style by going all the way down, coming halfway up, going back down, and then finishing the full rep.

Frequently asked

What muscles does the fly against chains work?
The fly against chains primarily targets the pectorals, and also works the serratus anterior and triceps as secondary muscles.
What equipment do you need for the fly against chains?
The fly against chains requires no equipment — just your body weight.
Is the fly against chains good for beginners?
The fly against chains is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.

Related exercises

  • Air Punches MarchBeginner · calves, pectorals, and quadriceps
  • Alternate Front Kick In Place With Arm CirclesBeginner · abs, calves, deltoids, and pectorals
  • Archer Push-UpAdvanced · pectorals
  • Arm CrossoverIntermediate · deltoids and pectorals

Train it with Crucible Fit.

Every movement in this library is in the app with video and instructions, ready for your own sessions on the days between Crucibles. Your first Crucible is on us.

Download on the App StoreGet it on Google Play

See how a Crucible works