"We have a little bubble that we've had all this time," Cher tells PEOPLE in this week's issue
Cher, Georgia Holt
Cher and mom Georgia Holt
| Credit: Jason LaVeris/FilmMagic

Cher is being extra cautious this holiday season.

Months after the COVID-19 pandemic ended her recent concert tour early, the pop superstar is taking no chances.

"I get tested [for COVID] all the time," she tells PEOPLE in this week's issue.

Cher, 74, says she has to "very careful" with her mom, Georgia Holt, 93.

"We have a little bubble that we've had all this time," she adds. "We wear masks, and there's not very many of us. It's my sister, my brother-in-law, my mom, my assistant. And we stay far apart from each other."

"I have to be careful too," she adds, "because I have asthma, I'm 74, and I have different health problems."

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Despite this difficult year, Cher has managed to stay busy, spending 2020 diving into work and activism.

She recorded a song for the Joe Biden campaign, helped rescue elephants through her nonprofit Free the Wild and lent her voice to the new animated children's film, Bobbleheads: The Movie (now streaming on Netflix), in which she plays a toy version of herself.

"I didn't realize that I would be working so much, not being on the road," she says. "I like being on the stage, so that took a little bit of getting used to. But then all of a sudden I was doing all kinds of things. I didn't plan to. It just allowed itself to happen."

"I have a saying," she adds, "'Stand and be counted, or sit and be nothing.' And so, as the things came my way, you do what comes your way."