If you want to increase your strength, don't increase your muscles, but control the rest time between groups. The specific scheme is as follows:

Take the chest as an example to do bench press, with the weight of 12RM as 6 groups, with each group resting for 3 minutes and pushing explosively. It's best to concentrate on some muscles for a month, such as chest or back or legs. Other muscles can be trained once. Practice this muscle three times a week.