Personally I feel the only muscle groups that you can train for that high of reps is legs and maybe a little back because the muscle groups are so big. Besides that I personally feel it's too many reps unless it's used as a pump set to get blood in and it's controlled with good time under tension.
Do you only do one exercise? 120 reps of heavy weight seems like a lot, especially if you're doing 6-7 exercises. That's nearly 1,000 reps of 'heavy' weight.
What exactly is your training goal here?
For back I usually do 20-30 working sets rep range 8-15 tops..mostly 8-12 but it's always until failure. Legs vary from 12-20 with rest pauses and drop sets. RDl I stick to low reps because hamstrings are your fast twitch muscle
Listen to ur body and base things also off ur recovery and energy. You can actually deplete your adrenals and cortisol levels and effect your CNS if you train at an intense level for to long. So doing a pyramid may help where u train hard as **** for 3 weeks then do one week of less overall volume and reps
Do you only do one exercise? 120 reps of heavy weight seems like a lot, especially if you're doing 6-7 exercises. That's nearly 1,000 reps of 'heavy' weight.
What exactly is your training goal here?