Cardio bores me, for heart health I think some is needed.
If I do 30 minutes, a couple times a week, Im lucky, I need to do more (maybe someday if it stops raining here and gets about 55 degree's I may go outside).
Do what you can stand, or enjoy. What Ive been doing:
5 minutes on bike
30 kettlebell swings
30 pushups (obviously no resting).
-----
I do this 5 times (so just about 30 mins).
Another thing Ive been doing:
Battleropes - 5 mins
Farmers walks - 4 times around cul-desac
Log press - 5 reps
-----
I do this 5 times (so just about 30 mins).
A bit more fun than just treadmill walking/jogging, but I do, do that boring stuff on SUN at the gym. (Treadmill/bikes).