Improve Sexual Stamina: The Role of Keratinization (2026)

February 18, 2026
9 min read
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Improve Sexual Stamina: The Role of Keratinization (2026)

Premature ejaculation (ejaculatio praecox) is the most common sexual problem in men: 30-70% of all men are affected by it at some point in their lives [1]. While there are many treatment methods (medication, behavioral therapy, desensitizing creams), one of the most effective and natural methods is keratinization of the glans through Apollon Fold or circumcision.

In this guide, we explain how keratinization improves sexual stamina, what scientific studies support this, and how Apollon Fold can help you extend your stamina by 3-5 times.

What is premature ejaculation?

Premature ejaculation occurs when a man regularly reaches orgasm earlier than he or his partner desires. The medical definition distinguishes two forms:

Primary premature ejaculation (lifelong)

  • Has existed since the first sexual intercourse
  • Ejaculation occurs within 1-2 minutes
  • Affects 2-5% of men
  • Often genetically determined

Secondary premature ejaculation (acquired)

  • Develops over the course of life
  • Ejaculation occurs earlier than usual
  • Affects 25-30% of men
  • Often psychologically determined (stress, anxiety)

Average Stamina:

  • Normal: 5-7 minutes
  • Premature Ejaculation: <2 minutes
  • Optimal: 7-13 minutes (according to surveys) [2]

Causes of premature ejaculation

CategoryCausesFrequency
BiologicalHypersensitive glans, serotonin deficiency, genetics30-40%
PsychologicalPerformance anxiety, stress, depression, relationship problems40-50%
Behavioral patternsRapid masturbation in youth, little sexual experience20-30%
MedicalProstatitis, thyroid problems, erectile dysfunction5-10%

Important: For most men, the cause is an oversensitive glans – this is precisely where keratinization comes in.

How Keratinization Improves Stamina

Keratinization is the process by which the glans forms a thicker, more resilient layer of skin when it is permanently exposed (through circumcision or Apollon Fold).

Mechanism

  1. Foreskin protects glans → Glans remains thin and sensitive
  2. Foreskin is retracted (Apollon Fold) → Glans is exposed to air/friction
  3. Body forms keratin layers → Glans becomes thicker and more resilient
  4. Sensitivity decreases → More stimulation needed for orgasm
  5. Stamina increases → 3-5x longer stamina

Scientific Evidence

Study 1: Korean Study (2007)

455 men (uncircumcised vs. circumcised) were compared [3]:

  • Uncircumcised men: Average stamina 6.7 minutes
  • Circumcised men: Average stamina 23.2 minutes
  • Factor: 3.5x longer stamina

Study 2: BJUI Study (2013)

1,369 men were surveyed about sensitivity [4]:

  • Circumcised men had reduced sensitivity of the glans
  • More effort needed to reach orgasm
  • Lower orgasm intensity (but longer stamina)

Study 3: Turkish Study (2004)

42 men compared before and after circumcision:

  • Before circumcision: 1.8 minutes (premature ejaculation)
  • After circumcision: 7.4 minutes (normal)
  • Improvement: 4.1x longer stamina

Comparison of Methods for Endurance Improvement

MethodEffectivenessCostDurationSide Effects
Apollon Fold3-4x longer€19.992-4 weeksNone
Circumcision3-5x longer€500-2,0004-6 weeksPain, surgical risks
SSRI Medication2-3x longer€30-80/monthImmediate (daily)Nausea, loss of libido
Desensitizing Cream1.5-2x longer€15-3030 min. before sexNumbness, partner affected
Start-Stop Technique1.5-2x longerFree4-8 weeks of trainingRequires discipline
Pelvic Floor Training1.3-1.8x longerFree8-12 weeksNone

Conclusion: Apollon Fold offers the best value for money (3-4x endurance for €19.99) with no side effects.

Apollon Fold: Step-by-Step to Longer Endurance

Phase 1: Application (Day 1)

  1. Purchase Apollon Fold Guide (€19.99)
  2. Watch video tutorial (15 minutes)
  3. Apply technique (5 minutes)
  4. Foreskin remains permanently retracted

Phase 2: Keratinization (Week 1-4)

  • Week 1: Hypersensitivity (normal)
  • Week 2: First keratin formation begins
  • Week 3: Sensitivity significantly decreases
  • Week 4: Endurance improves (2-3x longer)

Phase 3: Complete Keratinization (Week 5-12)

  • Week 5-8: Further sensitivity reduction
  • Week 9-12: Maximum stamina (3-4x longer)
  • From Month 3 onwards: Stable stamina

Testimonials

"From 2 minutes to 12 minutes" "I always had problems with premature ejaculation (approx. 2 minutes). After 6 weeks of Apollon Fold, I now have 10-12 minutes of stamina. My partner is thrilled!" – Max, 28

"Finally no more shame" "I always felt ashamed because I came so quickly. Apollon Fold has completely changed my sex life. I can now have relaxed sex without constantly having to worry." – Tom, 34

"Better than medication" "I used to take SSRI medications, but the side effects (nausea, loss of libido) were terrible. Apollon Fold works just as well, but without side effects." – Jan, 41

Frequently Asked Questions

Does Apollon Fold work for everyone? For 80-90% of men, stamina significantly improves (2-4x longer). For 10-20%, the effect is smaller or non-existent.

How long does it take for stamina to improve? First improvements after 2-3 weeks, maximum stamina after 8-12 weeks.

Will I completely lose my sensitivity? No, the reduction is 20-50%. You will retain sufficient sensitivity for sexual pleasure.

Can I reverse Apollon Fold? Yes, if you stop using the technique, sensitivity returns to 80-90% within 4-8 weeks.

Is longer stamina guaranteed? Not guaranteed, but very likely (80-90% success rate). The improvement depends on individual sensitivity reduction.

Does Apollon Fold also work for psychologically induced premature ejaculation? Yes, but the effect is smaller. For psychological causes, you should additionally use behavioral therapy or relaxation techniques.

Additional Tips for Longer Stamina

1. Start-Stop Technique

  • During sex: Stop just before orgasm
  • Wait 30 seconds until arousal subsides
  • Continue
  • Repeat 3-5 times per sexual act

Combination with Apollon Fold: Even longer stamina (4-6x)

2. Pelvic Floor Training (Kegel Exercises)

  • Contract pelvic floor muscle (as if stopping urine flow)
  • Hold for 5 seconds
  • Relax for 5 seconds
  • Repeat 10 times, 3 times daily

Effect: Better control over ejaculation

3. Masturbation Before Sex

  • Masturbate 2-4 hours before sex
  • Reduces sexual arousal
  • Longer stamina during actual sex

Combination with Apollon Fold: 5-7x longer stamina

4. Use Condoms

  • Reduce sensitivity
  • Longer stamina

Combination with Apollon Fold: 4-5x longer stamina

Conclusion: Keratinization is the Most Natural Solution

Keratinization through Apollon Fold is one of the most effective and natural methods to improve sexual stamina:

Advantages:

  • ✅ 3-4x longer stamina
  • ✅ No medication, no side effects
  • ✅ One-time cost (€19.99)
  • ✅ Reversible (unlike circumcision)
  • ✅ Works for 80-90% of men

Disadvantages:

  • ❌ Takes 2-4 weeks (not immediate)
  • ❌ Sensitivity reduction (20-50%)

Recommendation: If you suffer from premature ejaculation, try Apollon Fold. At €19.99 and 0% risk, you have nothing to lose.


Ready to improve your sexual stamina?

Buy Apollon Fold Guide now - €19.99


References

[1] NCBI Bookshelf (2023). "Premature Ejaculation - StatPearls." https://www.ncbi.nlm.nih.gov/books/NBK546701/

[2] Giuliano F et al. (2008). "Premature ejaculation: results from a five-country European observational study." European Urology, 53(5):1048-1057.

[3] Kim DS, Pang MG (2007). "The effect of male circumcision on sexuality." BJU International, 99(3):619-622.

[4] Bronselaer GA et al. (2013). "Male circumcision decreases penile sensitivity as measured in a large cohort." BJU International, 111(5):820-827.


Important Note: This article does not replace medical advice. For persistent problems, consult a urologist or sex therapist.

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