GRAB SOME NUTS Grab some nuts! They are rich in testosterone-boosting zinc as well as the amino acid L-arginine, which helps improve blood flow to the sexual organs EXERCISE Exercise combats a lack of libido by improving blood flow to the genitals, releasing ‘feel good’ endorphins and boosting energy levels – not to mention giving your self-esteem a boost. STRENGTH TRAINING If you want to increase your testosterone levels, try intense strength training. Increase the weight you lift, lower your number of reps and slow down the movement. INTENSE CARDIO Swap long runs for sprints. Short, intense bursts of exercise are known to be more effective at boosting testosterone levels and preventing its decline than sustained effort. ANTIDEPRESSANTS Depression can torpedo your libido -- and antidepressant medications can have a serious impact on sexual desire, too. Speak to your doctor about possible alternatives. MONITOR YOUR MEDICATION Some other prescription medications, notably drugs used to treat hypertension, can also cause a drop in libido. Speak to your doctor if you’re concerned about side effects. CONTRACEPTION The contraceptive pill is responsible for reducing sex drive in some women. If you’re concerned, consider switching to a different brand or using another birth control method. SLEEP A study at the University of Chicago found that getting five hours of sleep each night reduced men’s testosterone levels by 10 to 15%. Get your eight hours of shut-eye and you’ll have energy to do more than just sleep in bed. GET SOME SUNSHINE Vitamin D boosts testosterone levels and is essential for maintaining semen quality and sperm count. Make sure you get some sunshine, especially in winter, and eat vitamin D-rich foods, like oily fish, eggs and fortified fat spreads and cereals. CUT BACK ON SUGAR Eating sugar is known to cut the levels of circulating testosterone in the blood significantly, so cut back on sweet treats and try using honey to sweeten food instead of sugar. GO herbal Try an herbal supplement. A 1998 study at the University of California found that ginkgo biloba "enhanced desire, excitement, orgasm and afterglow" in 91% of women and 76% of men. CUT BACK ON BOOZE Alcohol can help you relax but too much can lead to erectile dysfunction and an inability to orgasm. According to experts at the Mayo Clinic, it’s best to stick to just one glass of wine before a night of passion. QUIT SMOKING Smoking is known to narrow the blood vessels, affecting blood flow to the sexual organs. Researchers at the University of Kentucky found that men who smoke have sex half as often as non-smokers. DE-STRESS Stress is a big passion-killer and according to Harvard Health Publications, its effect on libido is most strongly felt by women. Try relaxing with yoga, tai chi or meditation. LOSE WEIGHT Carrying too much weight can cause a narrowing of the arteries, reducing blood flow where you need it most. If you’re overweight, slimming down can significantly boost your testosterone levels, according to research presented at the Endocrine Society's 2012 meeting. Source
