I'm interested in how you guys do this as I am quite careful with how I work out, I am 49 now and am mindful of causing unnecessary injury. Lets take my workout this morning for example, I was doing chest so I start with a warm up 15-18 reps at 30kg, 10 reps at 50kg, 10 reps at 70kg, 5-8 reps at 80kg and maybe 3 reps at 90kg my max. I feel I could do a few reps at 100kg but have knackered myself out doing these previous sets. Same with squats, rows, press etc, I'll work my way up. Do you do this or jump to heavier wight quicker?