Nicely done, Lyle — your reference documentation is what keeps me coming back (and buying your books…). It’s now down, but USED to have in the bodybuilding section a “compare yourself to Arnold” plug-in calculator based on height and wrist dimensions.. SInce it’s been down for years I can’t forward the link but I printed mine off and — surprise! — it’s fairly close to Casey’s model as listed above. I suppose it’s an entirely different question as to whether “genetic potential” implies anabolic enhancements. The kicker? I’m trying “au natural” but I live in Bangkok, where all steroids are sold cheaply over the counter. The Universe, She is an ironic place. 🙂
Thank you Ted Huthchinson for your information. I will bear this in mind. I swim because I did competitively as a youngster and can still do it efficiently which helps lungs and general fitness. I would be unable to walk with a backpack as my lower back would ache too much. I also have multiple levels of arthritis in feet and ankles and tarsal tunnel problems that are in and out of normal levels. (Have reduced weight carried in my bag as well.) I stand and mess around most of the day, because my GP said standing was enough. I also garden, not daily. Housework and so on. I am quite a busy bee on a daily basis.
But many thanks for the information on Vit D