Fifties, here. Typically consume <50gr carbs daily, often quite a bit less. Don't do breads, tortillas, sauces, very few packaged items. Most calories come from really "clean" fats and proteins.
Can't speak to what it does for intensity of workouts. I haven't been able to bring higher intensity in workouts for years, now, given some old injuries. So, I keep the consistency and frequency up, work out sufficiently long, do what intensity I can do, and moderate my intake to support that level of activity. Works for me.
Some mainstays, in my intake: homemade veggie soups and salads; fish and chicken; occasional "red" meat; avocado; nuts and seeds; olive oil; herbs and spices; occasional "cheating" (but infrequent); with regular protein/fat rich blends; nut "milks"; modest portions; keeping very well hydrated, mostly with water.
Last edited by Clyde1820; 10-18-18 at 01:09 AM.