You have been training consistently for six months. The first three months, everything went up. Squat, deadlift, press. Every week, a little more. Then it stopped. The weights are the same. The sessions feel harder, not easier. You are doing everything right and nothing is changing. This is a plateau, and it is not a sign that you have reached your limit. It is a sign that something in the program needs to change.
The most common cause: not enough variation in the stimulus ¶
The body adapts to a specific stimulus. If you have been doing the same sets, reps, and loads for twelve weeks, the body has adapted to that stimulus and stopped responding to it. This is not failure. It is physiology. The fix is to change the stimulus: different rep ranges, different exercise variations, different rest periods, or a different loading scheme. You do not need to change everything. You need to change enough that the body has something new to adapt to.
The second most common cause: accumulated fatigue ¶
Sometimes a plateau is not a lack of stimulus. It is too much of it. If you have been training hard for eight or ten weeks without a planned reduction in load, the accumulated fatigue is sitting on top of your fitness and masking it. Your strength is there. You just cannot access it through the fog of fatigue. In this case, the fix is a deload week, not a harder session. Take the week, reduce the load, sleep well, and see what is underneath.
How to diagnose which one you are dealing with ¶
Ask yourself two questions. First: have I changed anything about my training in the last eight weeks? If the answer is no, the problem is probably insufficient variation. Second: am I sleeping well, recovering between sessions, and feeling generally energetic? If the answer is no, the problem is probably accumulated fatigue. If the answer to both questions is no, start with the deload. You cannot address a variation problem when you are too tired to train well.
What to change and what to keep ¶
When you change the stimulus, keep the movement patterns and change the loading scheme. If you have been doing sets of five, try sets of eight to ten for a four-week block. If you have been doing three sets, try four. If you have been doing the conventional deadlift, try the trap bar for a cycle. The goal is to give the body a new problem to solve while keeping the movement quality you have built. Changing everything at once makes it impossible to know what worked.
A plateau is not a wall. It is a waypoint. Read it correctly and it tells you exactly where to go next.