I train very early and I try to eat a small meal before but sometimes time doesn’t allow. Honestly I never felt my performance declined training fasted. This morning I trained faster performed deadlifts and accessories and was no issue. I think max effort days may be a different situation though. If you are competing or testing maxes I doubt faster training would be optimal.
I train fasted except for leg day, then it’s eggs and oatmeal beforehand. I work late and eat late so my glycogen stores are usually full in the morning.
My gym that I joined for cardio/backup is a block away from where I work, so I’m thinking of doing some speed/agility drills before work, and then running in to shower and eat at the office.
But I personally couldn’t imagine not eating before a lifting session. I usually weight train in the evening and down a bowl of pasta or instant ramen beforehand.
I almost always train before eating. I work for about 3 hours starting at 3:30am-4am, then train (without having eaten) before going to my other job, or in other years, school. I eat slightly later in the morning. 10am-ish. Might not be the best approach but it’s possible.