Mobility

Flexibility Progress Tracker

Retest your flexibility every week or two and log the result. Each test knows whether higher or lower is better, so the tracker can show real improvement, compare left and right sides and chart your progress.

-Baseline
-Latest
-Best
-Change
-Left vs right (latest)
DateSideResultvs previous

Runs entirely in your browser. Nothing is uploaded to any server.

Why measure flexibility

Motivation

Mobility gains are slow; numbers prove they are happening.

Balance sides

Left vs right comparisons show which side needs more work.

Program feedback

See whether your stretching routine is actually working.

How to track your flexibility

  1. Pick a testChoose a built-in test or create your own with a unit and direction.
  2. Log the resultEnter the date, side and value after a standard warm-up.
  3. Review progressCheck change from baseline, best result and the chart.

Standard flexibility tests

The sit-and-reach measures hamstring and lower back flexibility. The back scratch test from the Senior Fitness Test measures shoulder range. The knee-to-wall test measures ankle dorsiflexion, important for squats and running.

Consistency matters more than the absolute number. Use the same warm-up, measuring tape, reference point and time of day for every test.

Sit-and-reach

Hamstrings and lower back; higher is better.

Back scratch

Shoulder mobility; overlap is positive.

Knee-to-wall

Ankle mobility; around 10 cm or more is good.

Flexibility tracker FAQ

How do I do the sit-and-reach test?

Sit with legs straight and feet flat against a box. Reach forward slowly with both hands and hold the furthest point for two seconds. Record the distance with the same reference point every time.

What is the back scratch test?

Reach one hand over the shoulder and the other up the back. Measure the gap between the middle fingers as a negative number, or the overlap as a positive number. Test both sides.

Why does lower count as better for some tests?

For front splits measured as height from the floor, a smaller number means you are closer to a full split, so the tracker treats lower as better.

How often should I retest?

Every one to two weeks, warmed up the same way and at a similar time of day, so results are comparable.

What is a meaningful left-right difference?

Differences larger than about 10 percent, or a few centimetres on reach tests, are worth balancing with extra work on the tighter side.

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