The optimal frequency for heavy singles in strength training should be individualized, starting at perhaps once a month at around 90% of maximum.

“the 90 plus percent what you'll see is the 90 plus perc number is more like 1 to two reps per set for a total of about seven total repetitions if you start cruising past that um other bad things start to creep up in there”

“you need to find how often you can go heavy in the different lifts start with you know start with something maybe once a month about 90%”