This is relatively straightforward. You start with the hardest version of a push-up and work your way down. It goes like this: 

10 Decline Push-Ups

15

target="_blank">Standard Push-Ups

20 Kneeling Push-Ups

If this is too easy, then you can try adding in some one-handed push-ups at the beginning, just make sure you work both

sides of the body equally. If that still isn't enough exhaustion, then up the number of reps you're doing. It will take some trial and error to get to the right

amount of reps for your current strength level (that goes for ALL of these drop sets). 3-4 sets

Apply the same basic ideas to this exercise. Make each version easier; you will do the most reps at that point. Use less bodyweight with each progression. 

10

target="_blank">Standard Pull-Ups

15 Assisted Pull-Ups 

20 Inverted Rows

If you're finding this progression too easy, then try doing a couple one-arm pull-ups to start with on each arm.

3-4 sets

This progression works exactly the same as the pull-up one, except you are doing chin-ups instead. 

10 Standard Chin-Ups

15 Assisted Chin-Ups 

20 Inverted

Chin-Ups

 3-4 sets

This progression is deceptively hard, but you won't need to think too hard about how to accomplish it. All you do is move your feet further away with each exercise

progression. If you're feeling daring, you can eventually place you feet on a chair.

10  Dips, No Feet

15 Straight Legs Dips, Feet On Ground

20

href="https://www.youtube.com/watch?v=6kALZikXxLc" target="_blank">Bent Knee Dips

3-4 Sets

Your lower back and hips will benefit greatly from this ab progression. 

15  Leg Raises

25 Bent-Knee Raises

There aren't as many ways to do progressions of

this exercise, so you might want to up the reps you do to account for that (if it's too easy). 

This is the hardest body part to create a drop set for, so there are going to be a couple different options for you to try.

10 Pistol Squats/

href="https://www.youtube.com/watch?v=_pG2L1Z7IzA" target="_blank">Single Leg Squats

15 Squat Holds/Jump Squats

20 Standard Squats

Try out the different options and figure out what works best for you.