Activate a program (routine + diet plan combined)

New 12-week block. The training routine and the diet plan are already in your library, ready and reviewed. Instead of activating them one at a time, you activate the program that bundles both — one switch flips the routine, the plan, and the engagement window all at once.

What the agent needs to hear

Behind your sentence, the agent works backwards to two pieces: which program to activate (by name or by descriptor), and — implicitly — what to do with the current program, which gets paused automatically so two programs never compete for the same week. An optional third piece is the start date, which defaults to now unless you say otherwise.

Name the program the way it sits in your head: by title (« activate strength + cut Q2 »), by descriptor (« the new 12-week block »), or by what makes it distinct (« the one with the longer leg day and the 2,400 kcal cut »). The agent shows you a preview card with the program’s linked routine, its linked diet plan, and the first week of both queues — then waits for a nod before flipping the switch.

What a program bundles

A program is a bundle: a training routine plus an optional diet plan, framed by a defined engagement window — typically 8 to 16 weeks. Activating the program flips both linked layers together. The routine becomes the source of daily session queues; the diet plan becomes the source of meal logging and adherence scoring.

A program without a linked diet plan is still valid — a training-only program is a normal shape. Activation in that case flips the routine and is a noop on the nutrition side; whatever was happening with your diet plan keeps happening, untouched. If the program has both layers, both flip in the same beat.

What activation changes vs activating layers separately

Activating a program is structurally identical to activating its routine and its diet plan back-to-back — plus opening an explicit engagement window. The window is the difference that matters. It scopes weekly review, adherence percentages, and the progress narrative to a defined block.

A program engagement gives you « how the strength + cut block went, 12 weeks » as a single read. Separate routine and plan activations don’t naturally bound that window — the data is there, but the « this block » framing isn’t. The forward-looking rule still holds: activation doesn’t rewrite past sessions or meals. Past data stays attached to whichever templates were active then.

When the agent gets it wrong

Catch the wrong choice before you nod. If the agent picked the wrong program (« the maintenance block », instead of the new strength + cut), name the difference more sharply: « no, the new one — the strength + cut, not the maintenance block ». The card swaps.

If the program has no diet plan linked and you expected one, the preview shows that gap: « this program has no diet plan — confirm you want training-only ». Same mechanic for a wrong start date: « next Monday, not today » shifts the engagement to the start of the week.

What makes a clean program activation

Three things decide whether this program switch lands cleanly: the right program is the one now active (a wrong-program activation flips both routine and plan to the wrong templates in one move), the linked layers match what you expect (the preview shows both — confirm the routine name and the diet plan name before nodding), and the engagement window starts when you actually start training the block (a program activated three weeks before you start training reads as a three-week zero-adherence period in the weekly review). Programs give you a bounded « this block » read that loose activations can’t.