Performance
    Limited

    Flexibility Improvement

    Increased range of motion and joint mobility.

    TL;DR

    Range of motion improves with consistent stretching and full-range strength training, not with supplements. Collagen with vitamin C may support the connective tissue you are loading, but only alongside training.

    Why It Matters

    Restricted range of motion contributes to compensatory movement patterns, injury risk and, in older adults, reduced functional independence. Hypermobility carries its own injury risk, so more flexibility is not always better.

    How to Measure

    Biomarkers

    Sit-and-reach distance
    Goniometry joint angles
    Overhead squat assessment
    Beighton hypermobility score

    Optimization Protocol

    Stretch each target area for 60 seconds daily, five days a week, and train strength through full range, which improves mobility as effectively as stretching. Collagen 15 g with 50 mg vitamin C, taken 30-60 minutes before loading, may support tendon adaptation. Warm tissue before end-range work.

    Supporting Supplements

    Supporting Research

    Frequently Asked Questions

    Typical Timeframe

    4-8 weeks of consistent practice

    Research Summary

    Studies8
    Supplements2
    Evidence
    Limited

    My Notes

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    This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.