1. Stop Over-training
You may think you are doing your body good by lifting five to six days per week, but when specific muscle groups are being over worked, you will have a difficult time increasing your lifting weight. If you have "hit the wall" and cannot go any further, this would be the time to check your routine. By cutting back on exercises that may be working certain muscles too hard, you may be able to increase your weight, and best of all, your strength. Try these tips each time you cannot advance to more weight.
Choose a muscle group that you workout two or more times per week.
Cut back to one time, for two weeks.
Increase your weight.