Contact

Email

Ian Welkins — ianwelkins@gmail.com

The most useful messages include the page you were on, the numbers you entered, and what you expected to see. That is everything I need to reproduce a result and check it against the model.

Found a wrong number?

Use the report an error page — reports go to the same inbox, and the format there makes sure I get the inputs I need. Confirmed errors are fixed and noted under the editorial policy.

What I can and cannot help with

I can explain any formula on the site, check a specific calculation, and consider requests for new tools. I cannot give coaching or medical advice — for training plans and rehabilitation targets, a qualified coach or clinician is the right call.