MuscleRx Cardio Tool

VO₂ Max Improvement Calculator

Measure where you are, see where you should be, and get a personalized plan to improve your VO₂ max.

Inputs

Heart Rate Zones

Zones are estimated using: Max HR = 208 - (0.7 × age)

VO₂ Progress Tracker

No saved VO₂ history yet.
VO₂ Max
42
current
Fitness Level

Average

Your current score suggests a decent cardio base with room for meaningful improvement.

Build Your Engine
8–12 Week Focus
Estimated Gain
+0
Potential VO₂ improvement
Target VO₂
0
Recommended next target
Zone 2 Sessions
0
Per week
Interval Sessions
0
Per week
Current Rank
Average
Based on age and sex
Time To Target
0 weeks
Estimated if consistent

Weekly VO₂ Calendar

4-Week Progression

MuscleRx Guidance