Bicep Curl
Move · Resistance Training · Movement, Typed Supps
The curl is hardest exactly halfway up and nearly free at the top, because gravity only ever pulls straight down.
Stage by stage
- Set-up (Elbows fixed at the sides): Holding the elbow against the ribs keeps the shoulder out of the lift and the load on the elbow flexors.
- Mid-rep (Peak torque at ninety degrees): The resistance arm is longest with the forearm horizontal, which is where most sets fail.
- Top of the rep (Tension falls away): At full flexion the weight sits almost over the joint, so the last portion of a standing curl adds little.
- Days later (Repair and remodelling): Elbow flexors recover quickly relative to larger muscles, which is part of why curls tolerate frequent training.
Muscles trained
- Primary: biceps
- Secondary: forearms
Intensity
3.5 METs (Resistance (weight) training, multiple exercises, 8-15 repetitions at varied resistance).
Time to effect
- Weeks: Strength in the curl climbs fast, mostly from your nervous system getting more efficient at the movement.
- Months: Visible size in the upper arm takes a couple of months of consistent, progressively loaded training to show.
Related supplements
Common myth
"You can shape your biceps into a better peak by curling a certain way." In reality: The height and shape of a bicep peak is set mostly by tendon insertion points and muscle belly length, both fixed by genetics. Training makes the muscle bigger, which makes whatever peak you have more visible, but does not change its underlying shape.
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