Wrap a small workout towel/cloth around the bar you're using to make the grip thicker.
http://www.fatgripz.com - that's a site that promotes a product which accomplishes the same thing. It takes a little getting used to, but if your grip and forearm strength is not quite up to the bigger groups, a thicker grip is exactly where I would start.
There's also a tried & true favourite that I do regularly, but don't post about b/c it's not really worth tracking but get a tennis ball and just keep squeezing it in your palm (each palm individually of course). Do 50 reps, 100, you aren't going to develop hypertrophied hands or anything but I find it certainly helps with grip strength (it's almost more like grip 'endurance' I guess, being able to keep your fingers clasped around the bar etc).
http://www.fatgripz.com - that's a site that promotes a product which accomplishes the same thing. It takes a little getting used to, but if your grip and forearm strength is not quite up to the bigger groups, a thicker grip is exactly where I would start.
There's also a tried & true favourite that I do regularly, but don't post about b/c it's not really worth tracking but get a tennis ball and just keep squeezing it in your palm (each palm individually of course). Do 50 reps, 100, you aren't going to develop hypertrophied hands or anything but I find it certainly helps with grip strength (it's almost more like grip 'endurance' I guess, being able to keep your fingers clasped around the bar etc).