High Intensity Interval Training (HITT) Programs such as CrossFit covers a lot—but they do not consistently build everything well. They tend to biases intensity, competition, and variance. What they often under-delivers on is:

Controlled hypertrophy work
True aerobic base (Zone 2-3)
Structural balance / joint health
Intentional mobility & positional strength
The Goal of this program is to
* Build your engine (aerobic system)
* Build your chassis (muscle, joints, positions)
* Reduce injury risk

Not: crush yourself again.

STRUCTURE (2 DAYS / WEEK)
DAY 1 — Strength + Aerobic Base (Lower Bias)
DAY 2 — Upper Body + Structural Balance

WHAT this program is looking to Fix (THIS IS THE IMPORTANT PART)
1. Intensity Imbalance
HIIT Programs = always pushing
You = now controlling effort (1-2 Reps in Reserve (RIR) , tempo work)

2. Lack of Volume in Key Areas
Hamstrings
Glutes
Upper back
Arms

3. Missing Aerobic Base
Most people think they’re “in shape” but gas out because:
They lack low-intensity aerobic development

4. Joint Health / Longevity
You’re adding:
Unilateral work
Controlled eccentrics
Scapular stability

WHAT YOU SHOULD NOT DO
This is where people screw it up:
❌ Don’t turn these into mini WODs
❌ Don’t chase fatigue
❌ Don’t go past failure

If you leave these sessions feeling “smoked,” you missed the point.

You should leave feeling:
* Worked
* Better
* More balanced

How this program fits in a week
Example:
Mon – HIIT Program (CrossFit or something similar)
Tue – Supplemental Day 1
Wed – HIIT Program (CrossFit or something similar)
Thu – Off or light mobility
Fri – HIIT Program (CrossFit or something similar)
Sat – Supplemental Day 2
Sun – Off

If you do this right, you will:
Recover faster
Get stronger without plateaus
Stop nagging injuries
Perform better in WODs without doing more WODs

Most people just add more intensity.
You’re doing the opposite—and that’s why this works.