The sites below are what a previous post was referring to...the first url gives all the info..the second one is the how to....its a long info site.
In general you should devote simply 20 minutes to a half hour just to warming up as your excercise...this can include stretching sometimes but mostly warming up...stretching is an outgrowth of the warm up. Take some time to look at the second url which give tips on a particular order to work in...though of course you can be creative and autonomous about it once you are more familar.
Rub hands, feet, massage your legs and arms not rushed and remember posture with out being rigid because you are engaging in awakening your muscles, body, mind, and blood supply. Use breath full and relaxed not shallow and unaware. Because we only learn to take air into our chest-out-military dramatic fashion...learning how to breath in a full, deep, and more controlled manner can be like an art to itself as well as something we can learn. Breath has a lot to do with flexibility in the long run.
By the time you start stretching you should be fully warmed up all over. If you are really stiff you have to take the time to communicate with your body, mind, and unwind them first before you get to stretching...and never bounce please that doesn't really help. What can be a tremendous help is music that can take your mind and body elsewhere while still being in the moment. Silence as they say is golden and can be a great healer as well when warming up, stretching, excercise..etc. There are supplements, warm oils;creams and herbs, herbal forumlas than you can look into to help.
As for men being stiff thats not so new...however, if they start from young especially before or at least teen years like dancers, martial artists, etc.. or 20s even...they have just as good flexibility as most women because they've already trained their muscles and body plus in those fields you train every day. Once you get to be older in general you start to see or feel a difference.
sooner or lately. Although there are lots of people because their whole life has involved with physicality as such for example that they maintain themselves comparable to or optimal than many younger than them.
If with injuries older or not ..men..women or not....then no matter how much you've been a human gumby in the past this can be an issue. If you are not injured or dealing with scar tissue from past injury that is a plus. In these cases like with stiffness you have to slowly and gently work the body into this renewed or new sense of itself...patience is the key, it can be fun (yes frustrating too

) and enlightening to see what your body has to tell you about it/yourself.
Lastly, who has time for all of these timely measures if you are in a rush...do your best to make the time when you have some quite to yourself. If you have to shorten the warming up and/or stretching...do it more often or regularly. If you haven't already you might also want to try chi kung. ...
There are lots of tapes, dvds out there maybe a live classe...why not take a beginners ballet class...seriously.

(make sure you warm up well or find one with a floor-barre/warm-up first)..might be interesting...
Kylee