Factors Affecting Oxygen Delivery and VO2 Max

Your fitness isn't as fragile as you think it is!! Fitness loss is not as quick or significant as many people fear, and taking a few days or week off has essentially no impact on your fitness. And while detraining is a natural part of the training process and can be beneficial in certain contexts, taking long weeks or months off will definitely result in a detraining effect... but what does that timeline look like?