Race in Armour

[hoplite14gr]

Yes, but those aged 20 and above tended to their crops during the harvest season, no time to work out then (Sparta is an exception, of course)?

Reservist refresher training. It is practiced even today. And they served periodicaly in groups. Campaign season also was short.
That is why the Delian League started giving cash subsidies and started relying on mercenaries for longer and far away campaigns.
Kind regards.