I do twice a day. I love the feeling it gives me and the science behind exercise.
I split the year into two periods: Autumn/Winter: strength and Spring/Summer: endurance.
Both periods include strength and endurance, but the frequency is reversed.
Current week looks like this:
Monday: AM: 5km run PM: 30km bike
Tuesday: AM: 5x6 mins fast run + weights PM: 30km bike with 122 mins above FTP
Wednesday: AM: 5km run PM: 30km bike
Thursday: AM: 6x5 mins fast run + weights PM: 30km bike with 122 mins above FTP
Friday: AM: 5km run PM: 30km bike
Saturday: AM: 10*30s hill sprints PM: easy 30km bike
Sunday: Long run or long bike.
Aim is to hit all energy systems and keep a high easy volume.
Winter will have 5x weight session per week with power and strength work and a reduction in endurance work.
Plan/volume changes on holidays and rest days are taken ad hoc. The only way this is achievable from a recovery perspective is because I tightly control intensity on both the easy days and hard days rarely going all out. I think this is where many get it very wrong; burnout, lose enjoyment and find it a chore.
I also walk the dog.
I work and have 4 teenage kids. When they were younger the above volume wasn’t possible, but I took them out in the stroller, biked to work and used the gym at lunchtime.
A few things about the people that tell you it’s too much. Our body is designed to move a LOT. It breaks down when we don’t move. Plus, the guidelines of 150 minutes per week work on a population basis, but on an individual basis over 40%! of people are non-responders. The non-responders disappear when the volume is increased and intensity is managed.