There are many cardio exercises but in my opinion best cardio is sex (as mentioned before). It’s not just the same thing over again like running or skipping. You can really mix it up with many positions and multiple partners. There is also a large variety of dedicated equipment for this sport.
Shame there is no Olympic event for this, I would get properly in training for the next Olympics.
It is good to do sex every day. preferably several times a day.
