You are over-thinking this.
If you can’t walk for half an hour before you pick stuff up, you probably shouldn’t be picking stuff up.
I might even say you would benefit from throwing on a weighted pack/vest to better exploit the walking phase.
I love walking. But when I’m trying to be somewhere fast, I can’t help but getting a bit fatigue in my legs. Like today, I did the 40 minute walk to my gym. All fine, it was upper-body day. But it’s obvious I would be less fresh for a squat or a deadlift. I just wondered how I could lower the impact of the walk on those lifts. Maybe I should just bring a banana or an apple. But tbh, the workout went fine, so I don’t expect any problems on my squat day tommorow.
The pack sounds like a great idea, though that might be a bit too tiring for the legs & core?[/quote]
As others have pointed out, walking (assuming we’re not talking about some really vicious hill-climbing) involves totally different energy system demands and movement patterns than lifting and should have a negligible impact on squats/deads.
Training really doesn’t need to take place inside some perfect little bubble of freshness and optimal recovery, especially when you’re starting out. A little bit of fatigue really doesn’t matter. Actually, when I’m training hard I find mild to moderate fatigue is just a state of existence.
Bring a banana if it makes you feel better, but I really don’t think it makes too big a difference.