To perform a bicep curl to tricep extension, curl dumbbells to shoulder height, transition them overhead, then lower behind the head into an overhead tricep extension. Extend back up and reverse the sequence. It trains both major arm muscles in one continuous movement, making it ideal for time-efficient workouts.
How to Do It Step by Step
Starting position: Stand with feet shoulder-width apart, holding a dumbbell in each hand at your sides with palms facing forward (supinated grip).
Phase 1 — Curl: Curl both dumbbells up to shoulder height. Keep elbows pinned to your sides. Full bicep contraction at the top.
Phase 2 — Transition: From the top of the curl, rotate the dumbbells and press them overhead until arms are fully extended above your head.
Phase 3 — Extension: Keeping upper arms vertical and close to your ears, lower the dumbbells behind your head by bending the elbows. This is the overhead tricep extension portion. Lower until you feel a stretch in the long head of the triceps.
Phase 4 — Return: Extend back overhead, lower to shoulders, then control the dumbbells back to the starting position. That completes one rep.
Programming: 3 sets of 8 to 12 reps. Use as a finisher after your main arm work, or as the centerpiece of a time-crunched workout.
Muscles Worked
The curl phase targets the biceps brachii and brachialis. The transition involves the anterior deltoid. The extension phase targets all three heads of the triceps, with emphasis on the long head due to the overhead position. The core engages throughout for stability. This is one of the few exercises that meaningfully loads both the biceps and triceps in a single set.
Benefits
Time efficiency — trains both major arm muscles without switching exercises. Metabolic demand — continuous work without rest creates a strong pump and elevated heart rate. Balanced development — ensures you train the antagonist pair equally. Coordination — the flowing transition between curl and extension improves neuromuscular control.
Limitations and Alternatives
The load is limited by the weakest link — your curl strength. You will not be able to use as much weight on the extension portion as you would in a standalone overhead extension. For maximum tricep development, pair this exercise with heavier direct work like pushdowns, dips, or skull crushers.
For a similar time-saving approach using different equipment, try resistance band supersets or kettlebell complexes. Our best tricep exercises guide ranks all options by effectiveness.
Adjustable Dumbbells
Space-efficient for curl-to-extension combos.
Why we suggest it: One pair replaces an entire dumbbell rack.
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Common Mistakes
Using too much weight — let the curl determine the load, not the extension. Swinging the weights during the transition — the movement should be controlled, not momentum-driven. Letting elbows flare during the extension phase — keep them close to the ears. Rushing — the exercise works best with deliberate, controlled tempo.
