• Caspar Lee is an ex-YouTuber turned entrepreneur and venture capital fund owner.
• He shared his tactics for staying fit while running his own businesses and traveling often.
• These include using AI tools, walking as much as possible, and combining exercise with socializing.

Caspar Lee may no longer be a YouTuber, but he's still involved in the influencer world behind the scenes.

Lee, 30, is based in London and co-founded three companies: the marketing agency Influencer, the talent management company MVE, and the venture capital fund Creator Ventures.

With so many projects on the go, his schedule looks very different from week to week, and it can be hard to maintain a consistent fitness routine.

"I don't need to be able to run for over two hours, but I don't want to struggle if I go for a run," he told Business Insider as part of his campaign to promote Google's AI, Gemini Live. "I also do it for the mental health benefits, to be able to enjoy life, and I want to have some sort of muscle because it will be great as I get older."

Lee shared how he keeps fit to achieve these goals while running his own businesses.

Different types of exercise

Lee builds a few different types of exercise into his schedule. When he's traveling, he goes to the gym or goes on runs because it helps him manage jetlag and anxiety.

"If I'm struggling to stay awake, I'll go to the gym. Or if the next morning I'm struggling to wake up, I'll go for a run," he said. "I get a little bit anxious when I travel, and the endorphins help."

When he's not traveling, he likes to exercise at home after he gets back from work. He particularly enjoys the 20-minute workout videos by Joe Wicks on YouTube.

While he's at work, he tries to offset long periods of sitting down by doing stretches and building walking into his day.

"If I need to grab some food, I'll walk to fetch it. And instead of jumping on the Tube to get to a meeting 20 minutes away, I'll try to walk. I even try to take calls while walking. I just think walking is one of the best forms of exercise you can do and it's really underrated, so I do as much of it as I can," he said.

Making exercise social

"I'm not just someone who hangs out at the pub drinking pints. I'd rather be doing something fun," Lee said. "I love exercising with my friends."

His favorite workouts to do with friends are runs and playing golf

"I love to play golf. It's a nice 4-hour walk," he said. "And it's such a great way to make new friends and to spend time quality time with existing friends. Most weekends when I'm in England, I'll try to play golf one of the days."

He structures his workouts around playing golf, too, doing strength training early in the week and cardio later in the week so that his muscles aren't stiff for weekend golf rounds.

Lee also works out with his fiancée, the influencer Ambar Driscoll, "quite a lot," doing bodyweight exercises and walking.

AI-driven workouts

Because of all the traveling Lee does, he struggles to keep to a strict workout schedule or work with a personal trainer consistently. He said the Gemini AI structures and plans his workouts for the week.

He spends 45 minutes in the gym, doing three sets of six exercises for a particular muscle group, which he lets the AI decide.

"Yesterday I was using Gemini Live to help me because I wanted to do a fun push-up routine. It just came up with a bunch of things I could do," he said. "I probably don't put exercises together correctly, which is why I then ask Gemini 'What am I doing wrong?' and it helps."

Simple diet rules

"Generally my rules are: eat as little sugar as possible, drink as much water as possible, and get in protein," he said. "But I do love a dessert, so when I want to have sugar — like a tiramisu — I'll have it."

He makes a lot of chopped salads, he said, including tomatoes, carrots, cucumbers, mangoes, dates, and walnuts.

"I'll ask Gemini Live for help with food as well. I'll say 'Look, I just came back from traveling. I'm tired. I'm jetlagged. Can you help me come up with something that's going to help with that?' And it has the most incredible recipes," he said.