The most effective way I've found to do cardio for fat loss, is "fasted cardio".
I get up , take a thermogenic /pre workout and waddle over to the treadmill or stair climber.
The science behind this states that being in a fasted state , results in a higher % of stored fat to be burned.
The naysayers claim doing so, will burn more muscle tissue.
I think BOTH are true...huh?
It depends on your individual metabolism.
Naturally bulky dudes who can gain size easily often have problems getting ripped.
I'm in this camp and my main concern is losing fat to look ripped.
Thus, fasted cardio works wonders in helping me get ripped faster.
However, I've seen naturally thin guys, who lose muscle rapidly when doing fasted cardio.
Doing so, can cause them to end up looking like a surf board with abs LOL.