Suppose I train twice a day (ride in the morning, workout in the evening), could I maintain this schedule and do IHT after the evening workout, just before going to bed?
You can do IHT at any time convenient for you. The only requirement is – CONSIDER IHT AS A TRAINING SESSION and do not mix it with your other conventional training. Finish IHT at least 1.5-2 hours before normal training or start IHT 1-1.5 hours after completing physical workouts to avoid overtraining. Using IHT in the evening is fine (a bit tough after a good dinner though): you may find that IHT has a sedative effect and will result in great sleep.