It'd be interesting to see how much gym workout is equivalent in benefits to the frequent light-intensity activities recommended in the article.

There are some pretty simple ways to add extra light physical activity to your daily routine. I tend to drink a lot of water, which means I need to go fill my bottle a few times a day and walk to the washroom more often than I would otherwise.

There was also a TED talk about communities in Italy and Japan with long lifespans and lifestyles that involved lots of minor activities