Originally Posted by: Igcuimhne81Hi
my hand is cramping seriously!!!
I am playing an acoustic, and I notice that the natural position for my thumb is behind the neck, whereas the instructors thumb easily pops up over the neck. The only way I can do this is if my first finger barres the 4th, 5th & 6th string (2nd fret) in order to play the E note on the 3rd string, but I am not sure if this is technically correct. I dont want to start developing bad habits.
Some advice or tips would be much appreciated.
Every person is different, so you have to be the best judge on what works best for you, but BE CAREFUL. If you put too much pressure on your thumb with it directly behind the fretboard, you can strain the ligament, and then have your guitar playing put on hold while it heals.
A good exercise is to try fretting individual notes on the guitar without having your thumb behind the fretboard at all, just have it lifted off the back of the fretboard in the air. You should be able to lightly apply enough pressure to make your notes sound cleanly. This gives you a really clear idea of how little pressure is actually needed to fret a note.
Once you get that down, place your thumb behind the fretboard so its comfortable, but also use it lightly to anchor & stabilize your fretting hand. Not as a "clamp" to clamp down forcibly on the strings. Keep your hand relaxed and tension free. If your hand is cramping during playing, stop playing for a while.
A great many "pro" players use the thumb wrap-around technique, it just tends to make bending notes easier, and for some people its just more comfortable. But in the end its really just what works for you, just make sure that you're not straining your hand as you play. This will lead to things like carpal tunnel syndrome. I'd recommend trying the wrap-around technique just for a little bit at a time, with one or two chords. It will feel very awkward at first, but after a bit of practice, you'll probably get a good idea as to whether or not its going to work for you. I switched over to the thumb-wrap technique for all the reasons I stated above. It was a bit awkward at first, but now seems more natural and certainly keeps the strain off my hand. But I freely slide my thumb behind the fretboard when I need to. The real key is just not unnecessarily putting too much pressure on the fretboard.
Good Luck!