Lose Excess Weight

VO2 max is generally measured against your body weight. In other words, your overall efficiency will go up if you lose weight while maintaining the same VO2 max. Obviously, you don’t want to get your body fat percentage down too low, which is both unhealthy and unsustainable. But if you’ve got some significant room to lose weight, you can start making improvements to your VO2 max by starting to diet and cutting back on unnecessary foods, or replacing them with leaner alternatives like meal shakes.