RPE

Definition

RPE (Rate of Perceived Exertion) is a 1-10 scale used to measure how hard a set felt subjectively. Originally developed by Borg in cardio, the modern strength version (Mike Tuchscherer) maps directly to reps in reserve.

💡 RPE is the gold-standard tool for autoregulating intensity. Instead of fixed percentages, you adjust the load to your daily form.

The strength training RPE scale

Benefits of RPE

• ✅ Daily autoregulation: adjusts the load to your real form
• ✅ Avoids overtraining: reduces volume on rough days
• ✅ Maximizes good days: pushes harder when you feel great
• ✅ Reduces injury risk: stops before form breaks down
• ✅ Works without 1RM testing: no need for max-out sessions

How to use RPE in practice

• ✅ Hypertrophy: target RPE 7-9 most working sets
• ✅ Strength: target RPE 8-9 on heavy sets
• ✅ Deload: keep RPE at 5-7
• ✅ Stay honest: better to under-rate than over-rate
• ✅ Practice: rating accuracy improves with experience

⚠️ Beginners often over-rate (think they're at RPE 10 when they have 3-4 reps left). Practice and video review help calibrate.

Common mistakes

• ❌ Always pushing to RPE 10 (junk volume + injury)
• ❌ Never reaching RPE 8+ (insufficient stimulus)
• ❌ Confusing fatigue and RPE (you can be tired without the set being RPE 10)
• ❌ Lying to yourself about the rating

Key takeaways

RPE is your best autoregulation tool. Master it to adjust intensity to your real daily form. Most working sets at RPE 7-9, deload at 5-7, save RPE 10 for rare moments. Honest is better than optimistic.