Now I am doing chin ups every day.
On weekdays,I do 40+ chin ups(evenings before dinner and night
before sleep)
On weekends,I do 60+ a day-20+ reps before each meal.
Currently,my max is 14 chin ups before failure,so I do 6-8 reps per
set(not to failure) since I am training so frequently.
Once I can do 20 swee swee ones,I will stop doing bodyweight chin
ups and go to weighted versions.
No point doing 40 chin ups with bodyweight-these won't add much to
your upper back mass.