Neck Lateral Flexion

Move · Resistance Training · Movement, Typed Supps

Sideways is the direction the neck is weakest and least trained, and it is the direction a head takes most of its unexpected knocks from.

Stage by stage

Set-up (Short levers, mobile column): The cervical muscles act on very short moment arms supporting a four to five kilogram head, so small loads produce real demand.
During the set (Frontal-plane neck muscles): Sternocleidomastoid, scalenes, levator scapulae and upper trapezius tilt the head, while the opposite side controls the return eccentrically.
Immediately after (Fatigue arrives without warning): Cervical tissue tolerance is harder to judge by feel than at larger joints, which is the reason for light load and slow tempo rather than caution for its own sake.
Weeks later (Mostly neural early gains): Control in the frontal plane improves quickly in a rarely trained group; the link to reduced concussion incidence is plausible but not established.

Muscles trained

Primary: neck
Secondary: traps

Intensity

3.5 METs (Resistance (weight) training, multiple exercises, 8-15 repetitions at varied resistance).

Time to effect

Weeks: Neck strength and control in this specific direction improve quickly, similar to other small isolated muscle groups.
Months: For contact-sport athletes, this is one of several exercises used to build the kind of all-direction neck strength associated with lower concussion risk in some research, though no exercise eliminates that risk.

Common myth

"Neck training only matters for wrestlers and football players." In reality: A stronger, more stable neck is relevant to anyone doing overhead work or contact activity of any kind, though it is most heavily emphasized in collision sports.