You can update your Personal Health Assessment at any time!
Simply head to DASHBOARD > UPDATE MEASUREMENTS > Record New Measurements. This will add a data point to your TRACK graphs and recalculate your results.
If you make an error or need to correct something head to DASHBOARD > UPDATE MEASUREMENTS > Fixing an incorrect entry... This will replace the previous data and will generally not add a data point to your TRACK graph. It will recalculate your results.
Either way, your results will show as accurate according to that latest update however you may not see the changes tracked on the TRACK graphs.