[QUOTE=letsgomets1212;257745][COLOR="blue">Okay so me and my girlfriend have been dating for a while now. We're both virgins, and we've made a joint decision to move along at a slow but steady pace. We've both never really done anything sexually with anyone else, so we're both learning as we go along.[/COLOR]

Well...you've made my day! How many of the articles listed in the Index have you read? My replies to others on the topic? I have campaigned for years to get teens and young adults to s l o w down and to fool around and make out like kids did back in the fifties, sixties, and seventies.
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So right now were at a point where she's letting me touch her "down there" with just her underwear on. You might laugh that they have to be on, but she prefers taking baby steps. Well we've gotten pretty comfortable with it, to the point where she's enjoying it, and I've also gained some skill, and have learned how to rub her with good speed and pressure to make it feel good. [/COLOR]

Laugh? Not I! I recommend that the two of you read all of the articles in the Index and then discuss what you have learned. Add all this to what you already know. Knowledge is empowering. Kudos to the two of you--and I hope others reading this thread will follow suit.

[COLOR="Blue">But I've run into a bit of an unexpected problem. I find that my arms, or my forearms rather, fatigue quickly when pleasuring her. I am by no means a boney weak person, I'm actually built pretty well with good strength, but I find that when touching her, my arms get tired. They get so tired that I either have to change the motion I'm going in, or I have to change the which hand I'm using all together. You can imagine how both of these can be frustrating, as they break the rhythm I'm in, which breaks the rhythm she's in.
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Been there, done that, in more ways than one. Do you remember when you first began to masturbate and how tired and painful your hand and wrist became after a few minutes of stroking? This is the same thing. You are using your muscles in new and different ways that they are not used to. The fix is to do what you are doing and in not too long your technique will become comfortable. Give it some time.

[COLOR="blue">There were a couple times where I felt I might have been building her up to an orgasm, only to have to change up what had been a motion that was working on her, or take a pause to change hands completely.[/COLOR]

Yup! pausing, switching, making any change from what is building her arousal and moving her closer to an orgasm is frustrating to most women. Best not do this more than twice before continuing on to help her climax.

[COLOR="blue">At first it wasn't a major problem because she was new to having this done to her, but now that she's comfortable with it and is at a point where she can enjoy it [/COLOR]

Asked and answered, above.

[COLOR="blue">I feel like this minor issue is holding me back from really pleasuring her.[/COLOR]

Don't you know? There is an article on this, also. Please find the one that discusses communication, and, feedback. The two of you need to begin talking to or signaling each other on how you are responding to your partner's kisses and caresses and for what you need now/next.

Please understand that making love is not what we do to each other; rather, what we do with and for each other in partnership. Explore and learn together.

So in essence, I want to know what anyone might suggest on how I can fix this problem. Obviously, I need to strengthen some part of my arm so that it doesn't tire as quickly. I'd say I can probably go for about 5 minutes at a decent pace before I need to change something, and it's annoying.

Yes, annoying it can be; however, variety is also the spice of life. If she is giving you feedback on how she is responding then you can work with that in a number of ways, so this is not as terrible as you are thinking it is.

When you become tired, switch to oral and then go back to fingering, later.
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Can anyone recommend some simple exercises I could do that would strengthen the part of my arm I need to be able to pleasure her for a longer amount of time? Thank you[/COLOR][/QUOTE]

I do not know of any specific exercises. Just build up your tolerance over the next few weeks and you should be just fine.

Now, read the articles, please; discuss what you have read, work, explore, and, learn together. I hope this is of help.

Got questions?

-doc

If you and her are doing it front on from each other, then your arm will get tired very quickly. There is a few different ways that you can do it without getting a tired arm.
first and easiest way is her laying down on the bed and you on your strongest side while kissing, your arm may get tired at first but not as quickly.
The other way is you leaning against a bed or a wall, sitting down with your girlfriend leaning into you (both facing forward) with your strongest arm with her leaing the other way to your strongest arm so reach around.
I recommend the first one with it being the easiest and both of you will get as much excitement from it.

tough it up and youll get more endurance.. it has nothing to do with being built or strong its about endurance in those muscles