What Is DOMS and How Does It Work?

What Is DOMS and How Does It Work?

What Is DOMS?

DOMS stands for Delayed Onset Muscle Soreness. It refers to the aching, stiffness, and tenderness you feel after exercise—especially when training is new, more intense, or different from what your body is used to.

It typically peaks between 24–48 hours after exercise, although mild soreness can sometimes begin shortly after training depending on intensity and volume.

Why Does DOMS Happen?

DOMS is primarily caused by microscopic damage to muscle fibres during exercise.

This is especially common when:

  • Performing new exercises
  • Increasing training intensity or volume
  • Emphasising slow or controlled movements (eccentric loading)

This small-scale muscle damage is a normal part of the training process and is one of the signals that stimulates the body to adapt and become stronger.

Why Do Muscles Feel Tender?

The soreness and tenderness come from a combination of factors:

  • Micro-tears in muscle fibres from training stress
  • The body sending blood, nutrients, and repair signals to the affected area
  • A temporary inflammatory response as the muscle begins to recover

This inflammation increases pressure within the muscle, which:

  • Sensitises nerve endings
  • Creates the aching sensation
  • Causes discomfort when the muscle is stretched, flexed, or used

Do You Need DOMS for Progress?

No.

You do not need DOMS to have an effective workout.

Muscle soreness is not a reliable indicator of:

  • Muscle growth
  • Strength gains
  • Workout quality

Progress comes from consistent training, proper intensity, and recovery, not from chasing soreness.

Training to the point of pain is not necessary—and can often reduce performance in future sessions.

Can You Reduce DOMS?

While DOMS can’t be completely avoided, it can be managed:

  • Progress training gradually rather than making sudden increases
  • Warm up properly before training
  • Cool down and stretch after exercise
  • Stay hydrated and well-nourished
  • Maintain consistent training frequency to help the body adapt

Over time, your body becomes more efficient at handling training stress, and DOMS typically becomes less severe.

Key Takeaway

DOMS is a normal response to training, caused by small amounts of muscle damage and the body’s repair process.

It may feel uncomfortable, but it’s not something you need to chase.

Consistency, structure, and recovery will always outperform soreness when it comes to long-term progress.

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