Dumbbell Fly
The dumbbell fly is a chest isolation exercise performed on a flat bench, building pectoral endurance that supports HYROX sled push performance.
Movement
A dumbbell fly moves the arms through horizontal shoulder motion while holding dumbbells, commonly on a bench. Bench angle, elbow bend, range and load alter shoulder and chest demands; it does not isolate one muscle.
ACSM resistance-training position stand 2026
Programming
Use a controllable pain-free range and load. A deeper position is not automatically better, and no elbow angle guarantees shoulder safety. Choose dose from goal and response; this exercise does not guarantee muscle growth or HYROX® performance.
ACSM resistance-training position stand 2026
FAQ
Is there one correct load or dose?
No. Select it from the goal, equipment, experience and response.
ACSM resistance-training position stand 2026
Does it guarantee HYROX® performance?
No. Training relevance does not establish individual race transfer.
ACSM resistance-training position stand 2026
What if it hurts?
Stop for sharp, persistent or worsening pain and seek qualified assessment.
ACSM resistance-training position stand 2026
Track your chest accessory volume and pressing strength with Repz.
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