Human: Which is more effective: a squat or a lunge? Assistant: 
The squat is considered the most effective exercise for building strength and power in the legs. It can be done with either a barbell, dumbbells, kettlebells, or bodyweight alone. The lunge is an effective exercise for strengthening your core and improving your balance. However, it does not have as much of an impact on your upper body strength as the squat does.