What is DOMS?

DOMS stands for Delayed Onset Muscle Soreness—the muscle pain, stiffness, and tenderness that peaks 24-72 hours after exercise. It's that "I can't walk down stairs" feeling after a hard workout or race.

The Timeline

What Causes DOMS?

The Science

• 🔬 Micro-tears in muscle fibers
• 💥 Eccentric contractions (muscle lengthening under load)
• 🔥 Inflammatory response as body repairs damage
• 🧬 Not lactic acid - That's a myth!

Common Triggers

• ⬇️ Downhill running - Eccentric load on quads
• 🆕 New exercises - Unfamiliar movement patterns
• 📈 Increased intensity - Harder than usual
• 🏃 Racing - Pushing beyond training limits

DOMS vs Injury

When in doubt, see a professional!

How to Reduce DOMS

Before Exercise

• 🔥 Proper warm-up - Dynamic stretching, easy jogging
• 📈 Progressive overload - Increase gradually
• 💧 Stay hydrated - Before, during, after

After Exercise

• 🧊 Ice bath - May help reduce inflammation
• 🚿 Contrast shower - Hot/cold alternation
• 🧘 Light stretching - Gentle, not aggressive
• 🛢️ Foam rolling - May help, but don't overdo it

The Next Day(s)

• 🏃 Light movement - Easy run or walk (counterintuitive but helps!)
• 💤 Sleep well - Recovery happens during rest
• 🥩 Protein intake - Supports muscle repair
• 💧 Stay hydrated - Continue drinking water

What Doesn't Work

Despite popular belief, these have limited evidence for reducing DOMS:

• 🧘 Aggressive stretching - May worsen micro-tears
• 💊 NSAIDs - May reduce inflammation but impair healing
• 🔌 Electrical stimulation
• 🧴 Most topical creams

Running Through DOMS

When It's Okay

• ✅ Mild to moderate soreness
• ✅ Pain that improves as you warm up
• ✅ Equal soreness on both sides
• ✅ No sharp pain or swelling

How to Do It

1. Start very slowly (the first mile will be rough)
2. Keep intensity low (easy pace only)
3. Stop if pain worsens
4. Consider shorter duration

When to Rest

• ❌ Severe soreness that limits movement
• ❌ Pain that doesn't improve with warming up
• ❌ Signs of injury (sharp pain, swelling)

DOMS and Training

The Adaptation Process

DOMS is actually a sign that your muscles are adapting:

1. 💪 Stress applied
2. 🔧 Micro-damage occurs
3. 🔥 Inflammation and repair
4. 📈 Muscle comes back stronger

The "Repeated Bout Effect"

Good news: Once you've done an exercise, you'll get less DOMS the next time! Your muscles adapt quickly to familiar movements.

Prevention Strategies

• 📈 Increase volume gradually - 10% rule
• 🔄 Consistent training - Reduces novel stress
• 💪 Include strength training - Prepares muscles
• ⬇️ Practice downhills - If your race has them

DOMS is your body's way of saying 'I'm adapting.' It's uncomfortable, but it's also proof that you challenged yourself. Embrace it, recover smart, and come back stronger.