I need to increase my strength and cardio. I think my weakness in strength is my core. But my cardio is so weak, I don't know why. I sometimes can't catch my breath and feel like I will pass out, especially doing burpees during the warm up part of class. I get very frustrated with myself but I just can't seem to stick to a workout plan at home. I have noticed that when I jump rope every day, it helps my cardio, but there are still times when I just can't catch my breath during/after some exercises. I've been doing pushups (full), hand stands against a wall, and planks for core strengthening. Sometimes I get bored of jump roping and I'd like to switch up my cardio and alternate days. What do you all do for cardio and strength training?