Should you stretch before strength training?

Systematic reviews do not support treating every static stretch as harmful. They show that immediate performance effects vary with duration, the performance task, and what happens after the stretch.

A short hold used to find a comfortable training position is different from several minutes of passive stretching immediately before a maximal effort. Advice should preserve that difference.

The Behm review found a larger negative average performance effect when static stretching lasted at least sixty seconds per muscle group. Shorter durations had a much smaller average effect.

Kay and Blazevich also found that stretches under sixty seconds produced small average changes, while longer durations were more likely to reduce maximal muscular performance. These are group averages, not a timer that predicts every person's response.

The Behm review found a small average performance improvement after dynamic stretching. It also found that dynamic activity performed after stretching removed a clear performance effect in the available evidence.

For most home strength sessions, dynamic movement and progressive practice sets are useful because they prepare the pattern, range, and effort that the workout will actually ask for.

Before high-output strength or power work, prioritize specific rehearsal and avoid making long static holds the final preparation. Before a comfortable movement session, a short stretch may have little practical consequence.

If improving flexibility is the primary training goal, give it its own deliberate dose instead of hiding it inside every strength warm-up. That keeps preparation and flexibility training from competing for the same label.