Relative Strength is your ability to move your body through space. But I think the most
simple way to think about it is how well you can lift your own bodyweight. Want to
improve your relative strength? Start with mastering these 5 basic bodyweight
movements:
 

1) The Strict Pull-Up:

Undoubtedly the most beneficial bodyweight exercise that
basically strengthens the entire upper body and offers the most carryover into
everyday life. You must master the basic ring row first. If you can competently
rep out at least 5 unbroken strict perfect pull-ups you have developed a good
baseline of relative strength. Another reason I love strict pull-ups is because it’s
easily one of the most “value for time” exercises you can do. The strict pull-up
does a fantastic job of building foundational upper body strength and
musculature. Anyone that can rep out at least 10 unbroken strict pull-ups is
bound to have a muscular upper body.
 

2) The Strict Dip:

To reiterate, the strict dip is to pushing what the strict pull-up is to
pulling. Having the ability to perform at least 5 unbroken bodyweight dips should
be a baseline of strength for all lifters. The strict dip builds foundational
bodyweight pushing strength and does a tremendous job of developing the pecs,
triceps, and anterior delts. Again, you must master strict push-ups first. Once you
can competently perform 5 sets of 15 perfect strict push-ups, then you know
you’re ready to start effectively training the strict bodyweight dip.
 

3) Strict Toes to Bar/L-sit:

Having the ability to touch your toes to the bar while
hanging means you have a solid baseline of abdominal strength. Having the
ability to compress your body to lift and hold your legs up means you have
tremendously strong abs and hip flexors. While it may seem counterintuitive, if
you want to improve your strict toes to bar, improve your strict pull-ups as there’s
a lot of lat strength required as well.
 

4) Single Leg Pistol Squat:

The Pistol squat is undoubtedly the most advanced
single leg exercise. This exercise requires balance, skill, mobility, flexibility, and
strength. If you have the ability to competently rep out quality pistol squats with
both legs then you possess exceptional single leg strength. Make sure to master
step-ups>lunges>rear foot elevated split squats>pistol squats from an elevated surface before you focus on pistol squats from the ground.

5) Strict Muscle Up-

In my opinion, the strict muscle up is the single greatest upper
body exercise ever. By combining the pull-up and the dip, you train virtually every
muscle in the upper body which is why I consider the strict muscle up an
extremely high “value for time” exercise. The major issue with the strict muscle
up however, is that it requires a high level of requisite strength to perform
competently. Not even most fitness professionals possess the requisite strength
for a strict muscle up. You have to earn it. The only way to earn it is to master the
strict pull-up, strict dip, and strict toes to bar all with a high level of competency
first.
If you stick to the basics and master the basics of bodyweight strength, I assure you it
will serve you well in your training career.