You can help an older man climax by having the man take medications such as Sudafed, taking medications that block the chemical effects of SSRIs and even through testosterone replacement therapy.
Other things that can help an older man climax are avoiding smoking, exercising regularly, eating a healthy and well balanced diet, getting enough sleep and doing stress relieving activities.
If the older man is having trouble with erections or has erectile dysfunction they can take medications such as Viagra.
Performing Kegel exercises to strengthen the pelvic floor muscles and using sexual aids like vibrators or even using sex games and erotic fantasies can also help a older man climax.
Older men even in their 70s, 80s and 90s can still get a woman pregnant.
Although a man's fertility declines as they age a man can still produce sperm that is fertile throughout their lives no matter their age.
Just being older in age does not mean you won't get a woman pregnant so if you don't plan to have a baby and want to have sex you should still use condoms.
Sperm quality also does decline as you age and into your 70s and older men are much more likely to pass on genetic disorders to their children.
A decline in the man's testosterone levels can also impact the mans fertility through sexual dysfunction including erectile dysfunction.
If you're an older man you should have your semen analyzed to make sure everything is normal and have your doctor review any medications you take.
There have been men in their 80s and 90s who've gotten women in their 80s and 90s pregnant as well.