How many reps of arm swings should a beginner do before a workout?

Fifteen to twenty continuous swings is a typical warm-up dose, done in one set right before upper-body training or a cold-weather run. Let the range widen gradually rep by rep, exactly as it should feel by the end of the set.

How do I make arm swings easier or harder?

Easier: keep the arms lower than shoulder height and use a small, gentle range while the shoulders are still cold. Harder: raise the arms fully to shoulder height and let the range grow toward a full cross-and-open swing once you feel loose.

What are arm swings good for, and when should you use something else instead?

They raise blood flow and joint temperature in the shoulders and chest fast, useful before pressing work or a run. They are a poor substitute for real mobility work on a genuinely stiff or previously injured shoulder, where a slower, controlled drill like shoulder CARs is the better starting point.

Beginner

Arm Swings

A fast, no-setup way to pump blood into the shoulders and chest before an upper-body session or a cold-weather run. The crossing and opening pattern loosens the pecs and anterior delts while the swing brings up joint temperature. Keep it light and springy rather than forceful.

Equipment: Body Weight
Body part: Chest, Shoulder
Type: Stretching
Browse by muscle: Deltoid Anterior, Deltoid Posterior, Pectoralis Major Sternocostal

How to do it

1
Stand tall with the feet hip-width and the arms extended out to the sides at shoulder height.
2
Swing both arms across the front of the body so they cross over each other.
3
Reverse smoothly and swing them wide open behind you to stretch the chest.
4
Let the movement stay relaxed and rhythmic, driven by momentum rather than force.
5
Alternate which arm crosses on top each rep and keep the shoulders down.
6
Continue for a controlled set, gradually increasing the range as you loosen.

Tips

Do not fling the arms past a comfortable end range, especially when the shoulders are cold.
Keep the ribcage down so the swing comes from the shoulders, not an arching low back.
Start with a small range and open it up only as the tissue warms.

Variations

Common mistakes

Crossing with the same arm on top every rep, instead of alternating, develops a lopsided warm-up between the two shoulders.
The shoulders ride up toward the ears as the tempo speeds up, turning a loose warm-up into a tense one.
Pausing at the crossed position to hold a stretch, rather than continuing to swing, turns a dynamic warm-up into a static pec stretch on a joint that is still cold.
A handful of reps rarely raises tissue temperature at all; the point of this drill is the repeated rhythm, not a quick token set.

Frequently asked

How many reps of arm swings should a beginner do before a workout?: Fifteen to twenty continuous swings is a typical warm-up dose, done in one set right before upper-body training or a cold-weather run. Let the range widen gradually rep by rep, exactly as it should feel by the end of the set.
How do I make arm swings easier or harder?: Easier: keep the arms lower than shoulder height and use a small, gentle range while the shoulders are still cold. Harder: raise the arms fully to shoulder height and let the range grow toward a full cross-and-open swing once you feel loose.
What are arm swings good for, and when should you use something else instead?: They raise blood flow and joint temperature in the shoulders and chest fast, useful before pressing work or a run. They are a poor substitute for real mobility work on a genuinely stiff or previously injured shoulder, where a slower, controlled drill like shoulder CARs is the better starting point.

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