In Houston, where I grew up, older people (retirees) used to drive to their nearest indoor mall just after it opened for the day and walk laps around the inside

In Houston, where I grew up, older people (retirees) used to drive to their nearest indoor mall just after it opened for the day and walk laps around the inside the mall. They wanted to walk but they didn't want to do it in the heat. Some of those old guys, my grandfather included, could really move. I'm curious to know if that's still common.