It is uncertain whether walking alone is sufficient for cardiovascular health, and the relative physiological benefits of different exercise types (e.g., strength training, walking vs. high-intensity training) are still being evaluated.

“I guess I'm not at a point yet where I know enough even though this is a very high priority for me to understand this can walking be sufficient from a cardiovascular standpoint in other words if you told somebody all you gonna do is lift weights and walk but you can skip any of the high-intensity training you can skip doing your Tabata Xand mat ball slams or you know peloton stuff like that there's like a type of exercise that's still in the middle of those I'm still trying to I think come to grips with what the relative physiologic benefits are”