The CEO behind Grand Theft Auto has an 8-part longevity routine for shredded abs and sharp decision-making. Here's why peptides aren't part of it.

Take-Two Interactive CEO and chairman Strauss Zelnick, 69, loves a hard workout. Carl Timpone/BFA

Media mogul Strauss Zelnick spends his days hyper-focused on making the most creative, innovative, best video games in the world.

As the CEO and Chairman of video game-maker Take-Two Interactive, he's readying to release Grand Theft Auto 6 next month.

At home though, he doesn't play games. He prefers to spend his time working out and staying healthy for a long time.

At Business Insider's "The Long Play" event on Thursday, Zelnick said his formula for healthy aging is both simple and effective.

While he calls biohacker Bryan Johnson , the man behind the "Don't Die" movement, a friend, he said trying to live forever is a pretty silly strategy.

"There's almost no evidence that anything anyone is doing will increase your lifespan," he told Business Insider's Senior…