If someone doesn't mention a detail, assume they meant "whatever is standard". All beginner strength training programs recommend 3x per week, do they not?
>> if you're recovering well
>
> I’ve been strength training for 20 years and even I’m unsure what this means.
Recovery in strength training means eating, sleeping and resting worked muscles for at least a day (i.e., don't work the same muscle on consecutive days). I think it's safe to assume they meant "if you're eating and sleeping well, and resting muscles appropriately".
>> if you're recovering well
>
> I’ve been strength training for 20 years and even I’m unsure what this means.
Recovery in strength training means eating, sleeping and resting worked muscles for at least a day (i.e., don't work the same muscle on consecutive days). I think it's safe to assume they meant "if you're eating and sleeping well, and resting muscles appropriately".