1. Wear boxers or no underwear
2. No hot tubs
3. He should not 'relieve' himself in the few days leading up to sex.
4. Make sure he doesn't have a deficiency in zinc.
5. He should get plenty of rest and don't over exert.

• Needless to say, bad health will lead to a compromised sperm count. If you are TTC, you should refrain from illicit drug use, quit smoking, and moderate or quit drinking alcohol.
• On the topic of sound health, consider cutting out unhealthy processed foods and switch to a high protein diet rich in vegetables and whole grains but low in fats. Organic foods when possible are also suggested!
• Regular exercise is also a big part of a healthy lifestyle and will reduce stress hormones that may damage sperm. Getting in shape is good idea for fertility in general for both women and men. At the same time, over-exercise can be detrimental, and in particular avoid any exercises that my impact or stress the testicles. If you're an avid cycler, make sure you don't ride too much. A doctor can tell you more. Also consider stress-reducing exercise like yoga, tai chi, or meditation practice.
• If you have a documented sperm count issue, then timing intercourse and regulating the frequency of sex (to around three day intervals) may be advised. However, your doctor can provide you with more specific details based on your unique circumstances.
• Its been suggested that sperm counts are highest during the morning hours. That would mean having procreative sex in morning to afternoon hours.
• Heat can compromise sperm health. Avoid hot-tubs and even tight underwear! Switch to jockey shorts and ensure a cool climate for the swimmers.
• Consider supplements like FertilAid for Men. When it comes to sperm health, minerals like zinc & selenium, amino acids like l-carnitine, and antioxidants like Vitamin C and Vitamin E are very crucial to sperm health. L-carnitine is particularly important for sperm motility. A recent clinical study revealed that FertilAid increased both sperm motility and count.

Dietary Supplements & Sperm Count

Supplements like FertilAid for Men contain proven fertility-enhancing ingredients that have been shown to support key sperm parameters like motility and count.

Clinical studies continue to demonstrate that antioxidants, the amino acid, l-carnitine, and minerals like zinc an selenium help promote sperm motility and concentration. A recent (2007) FertilAid for Men study further substantiates these claims.

L-Carnitine plays a vital role in spermatogenesis & sperm development – and in ensuring the maintenance of sperm quality and vitality. L-carnitine supports the metabolic processes of sperm and therefore helps sustain normal motility.

Antioxidants scour damaging free radicals from our systems. Free radicals cause oxidative stress to tissues and may impair vital cellular and metabolic processes, including spermatogenesis. There are many antioxidant forms, including vitamins like C and E, as well as natural agents like Grapeseed Extract. Numerous studies indicate that supplements rich in antioxidants can dramatically improve male reproductive health and boost sperm counts.

Also if he takes some B12 vitamin that is supposed to help male fertility and B6 can help a woman if you want to take that.

I hope this helps you and good luck. If you want something inexpensive do what it says, and have him take B12. I don't know how much the other stuff costs.