Lacrosse

Move · High-Intensity · Movement, Typed Supps

The stick never stops moving, so the forearms are working even during the parts of the game that look like rest.

Stage by stage

Throughout play (Continuous grip and shoulder tension): Cradling keeps the forearm flexors and shoulder under low-level contraction independent of running load.
During transitions (Repeated-sprint demand): High-intensity efforts with incomplete recovery make sprint reproducibility, not steady-state capacity, the limiting quality.
Immediately after (Contact and overuse load): Checking produces concussion and contusion risk, while repetitive shooting and cradling drive shoulder and wrist strain.
Weeks later (Skill holds under fatigue): Passing accuracy late in matches depends on upper-limb endurance, which leg-focused conditioning does not build.

Muscles trained

Primary: shoulders, forearms, quads, heart, lungs
Secondary: calves, glutes

Intensity

8 METs (Lacrosse).

Time to effect

Weeks: Stick-handling under pressure — cradling through a check without losing the ball — sharpens within the first few weeks of regular reps and drills.
Months: Repeated-sprint conditioning across a full transition game and the shoulder-forearm endurance for accurate passing late in a match typically build over two to three months.

Related supplements

Common myth

"Lacrosse is a niche sport that isn't physically demanding compared to football or hockey." In reality: Field lacrosse players commonly cover several kilometres per game in repeated sprints while absorbing legal body checks, and match-analysis data put its aerobic and collision demands in a similar bracket to top-flight soccer with added contact.