This is a proven protocol from The 4 Hour Body by Tim Ferriss.
Recommended Program - 1 to 2 Months
Morning upon waking - 2 capsules of Cod Liver Oil and 3 tablets of Vitamin D3
Before bedtime - 2 capsules of Cod Liver Oil and 3 tablets of Vitamin D3
10 Minute Cold Showers - upon waking and right before bed
20 to 24 Hours Pior to Sex
Eat at least 800 milligrams of Cholesterol (example: 4 or more large whole eggs or egg yolks) within 3 hours of bedtime, the night before you want to have incredible sex. Why before bed? Testosterone is derived from cholesterol which is primarily produced during sleep between midnight and 4:00 to 6:00 AM.
4 Hours Prior to Sex
For "Nitro Boost" to support hard and extended erections, eat 4 Brazil Nuts and 20 Raw Almonds and take 2 capsules of Cod Liver Oil.