unilateral training is where you train one limb at a time. This is a great way to prevent or eliminate any muscle imbalances. Now you might not be able to go as heavy as you would with using both limbs, but you would be able to focus on building that individual body part stronger. 

Exercises like:

• dumbbell bicep curls 

•dumbbell bench press

• Bulgarian split squat

•single leg extension 

Of course these are just a few of many exercises for unilateral training. So try adding some unilateral exercises in your training program.