Deadlift with Baby
Deadlifts can be a great way to strengthen and the glutes and hamstrings. Although these are usually performed with free weights, you can sub out the weights for your baby instead.
To get started, stand with your feet shoulder width apart, core pulled in, and back straight. Hold your baby in a cradle position at chest level. Slowly lower your body forward at the waist keeping your back straight. Lower your upper body until parallel with the floor and then slowly return to the starting position. Repeat for 10 repetitions.
Note: Make sure you can fully support your baby before attempting this exercise. Performing this exercise with heavier babies is not recommended.