When more days helps
More frequent training can help if it improves movement quality, splits weekly muscle work into more manageable sessions, or keeps output higher across the week. It is a tool, not an automatic upgrade.
Programming Question
There is no single best number for everyone. The right training frequency is the one that gives you enough quality work to grow without driving so much fatigue that performance, recovery, or adherence start to break down.
Direct answer: do not chase the highest frequency. Choose the schedule you can recover from, execute well, and repeat long enough for progressive overload to work.
More frequent training can help if it improves movement quality, splits weekly muscle work into more manageable sessions, or keeps output higher across the week. It is a tool, not an automatic upgrade.
If adding days creates rushed sessions, incomplete recovery, poor loading, or frequent skipped workouts, it is not a real progression. It is just more calendar exposure without better adaptation.
Best next step
A schedule only works if your recovery, equipment, and available session time support it. Use the program pages to judge fit, not just ambition.