Training three times daily is sustainable only if you recover physically and your work doesn't suffer. The speaker trained hard this way and kept both sides going, so he argues there's no magic limit to volume if those two conditions hold.
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But I've went through times in my life where I was training 3 times a day, 'cause I was, you know, I was doing cardio in the morning, lifting midday, and then at night I would run. You can definitely fall into that trap of like overworking, but I think as long as you're still getting your work done and you're still progressing in those goals, I don't think there can be too much. As long as like physically you can recover from what you're doing and you're not burning yourself out physically, I think there's definitely a good balance. But as long as I think your business goals are progressing and you're not putting those off because of your, you know, what you're doing physically, like as far as working out and exercise, I think you're good to go.