If youre out of shape lift a little bit

I was in the gym a lot before covid. Im a single dad now and on my own. Carrying bags was fucking hell when i first moved here a few months ago; I'd get hime all out of breath and dying. Now that ive been lifting a bit, carrying crazy heavy grocery bags a few blocks is pretty EZ.

Need to figure out how to get good cardio, my shitty treadmill doesnt work that well.