2016 - A good year
2nd in ACT bouldering comp (masters division)
Ranked in the top 10 nationally in my age group in orienteering
Top 20 of my age group in the Hoppet ski marathon
Best Parkrun - 3rd on handicap (out of 197 runners)
Sub 95 minute half marathon
Best backcountry skiing for many seasons
Plus the occasional unicycle or 20km on inline skates.
T1 and Addison's are no impediment to competitive performance, even if like me you do not have a sporting background and are past retirement age.
But to be competitive at my age, you really should ignore most of what doctors and dietitians say.