Woman performing a controlled kettlebell lunge with slow reps to increase time under tension and improve strength

Workouts Not Working? Slow Down Your Reps

December 21, 20252 min read

If your workouts feel hard but the results aren’t showing up, the problem usually isn’t motivation or effort.

It’s how fast you’re moving.

Most people rush through their reps — dropping weights, bouncing out of the bottom, and relying on momentum instead of muscle. That creates fatigue and sweat, but very little progress.


Why Fast Reps Stall Results

When reps move too quickly:

  • Muscles don’t stay under tension long enough

  • Form breaks down

  • Joints take more stress than muscles

  • The target muscles barely get challenged

You work hard — but your body doesn’t get a strong enough signal to change.


The Fix: The 5-Second Rep

One small adjustment can dramatically improve your workouts:

Take 4-6 weeks and slow down the lowering phase (eccentric) of each rep to five seconds.

Count it out:
1… 2… 3… 4… 5

This approach is often called eccentric training or time under tension, and it’s one of the most effective ways to build strength and muscle safely.


What Slower Reps Do for Your Body

Using controlled 5-second lowering helps:

  • Build strength with lighter weights

  • Improve form and joint stability

  • Strengthen the mind–muscle connection

  • Reduce injury risk

  • Increase muscle-building stimulus

Time under tension is a major driver of progress.

Every controlled second sends a clear message to your body:

Build. Adapt. Get stronger.


How to Use the 5-Second Rep (Quick Upgrade)

Try this simple upgrade for the next four weeks:

  • Reduce your normal load by about 25%

  • Lower the weight for five full seconds

  • Can be use with free weight, machines or body weight

  • Lift the weight with control (normal speed up)

  • Use it on most movements including:

    • Squats

    • Presses

    • Rows

    • Lunges

    • Push-ups

    • Arm work

You’ll feel muscles working that may have been bypassed for years.


Fast Reps vs Slow Reps

Fast reps build sweat.

Slow reps build bodies that look strong, move well, and stay healthy.

If your workouts aren’t working, don’t add more exercises.

Add control.

Reg Bourcier is a fitness and nutrition coach, and former pro and college athlete specializing in strength, fat loss, and pain-free training for adults in their 30s, 40s, and 50s. With over 20 years of coaching experience, he helps busy men and women rebuild consistency, lose weight, improve mobility, and fix common issues like poor posture and joint pain. Reg is the founder of Prevail Coaching, an online and hybrid coaching program built for real-life results.

Reg Bourcier

Reg Bourcier is a fitness and nutrition coach, and former pro and college athlete specializing in strength, fat loss, and pain-free training for adults in their 30s, 40s, and 50s. With over 20 years of coaching experience, he helps busy men and women rebuild consistency, lose weight, improve mobility, and fix common issues like poor posture and joint pain. Reg is the founder of Prevail Coaching, an online and hybrid coaching program built for real-life results.

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