Is all cardio created equal? Absolutely not...
And the style of cardio that you choose will depend heavily on your ultimate goal for the cardio - if it's purely fat loss, there IS a specific way to do cardio that will burn the majority of calories from fat while preserving muscle.
What is that type of cardio, you may ask? Well, the answer might surprise you.
Low intensity, steady state cardio - and specifically walking on a very high incline. It can be a fairly brisk pace, but this type of cardio favors fat stores as fuel, as opposed to high intensity cardio (like HIIT), which relies much more on carbs/glycogen for fuel.
The downside to doing this type of cardio is that it can definitely take a longer period of time to burn a bunch of calories, but the calories burned will almost entirely come from your stored fat - which is what most people are looking for.
Obviously, the higher intensity cardio burns more calories in a shorter period of time and is great for the heart and cardiovascular system, so it absolutely has it's place - but if you are purely looking to lose fat, a walk on the treadmill with the incline maxed out is the way to go.
Hey Steve... What about Calories in/Calories Out (CICO)??
Great question!
High intensity cardio will burn more calories, but if you are in a caloric deficit and losing weight, High Intensity Cardio can increase muscle protein breakdown and elevate cortisol, which can accelerate muscle catabolism in a calorie deficit. Which means yes, you could lose weight, but you might be sacrificing hard earned muscle tissue instead of just losing the fat.
This is the exact type of cardio that I am currently using to recomposition my body - I'm looking to keep as much muscle as humanly possible, while stripping the fat.
What have you guys found to be the most effective form of cardio in your experience?