You can't beat a classic. Squat jumps have been and always will be your BFF move for weight loss.
Konforti's form tip:
Take a shoulder-width stance, with your hands at chest height.
Sit back, keeping your knees in line with your toes, then explosively jump up as you extend your hands to the sky.
Land softly through your toes, then heels. Either add a pause at the bottom of your squat for strength or keep the movement continuous to drive up the intensity. For an extra challenge, add in a slight twist as you jump up, alternating directions each rep and eventually building up to a full 180-degree rotation.