

You train, you turn up, you put the work in. Then you sit at a desk for eight hours, and it is easy to assume the session has you covered for the day. It mostly does, and being active is genuinely one of the best things you do for yourself. There is a bit more to getting the full return on it, though, and most of that comes down to what happens in the hours around your training rather than in it.
Here is the part that surprises a lot of fit people. Long stretches of sitting seem to carry effects of their own, even in those who train regularly. The encouraging news is that a good daily dose of activity offsets much of that, so your session is far from wasted. But recent research suggests unbroken sitting still counts on its own, which means your workout does not entirely wipe out the desk day either. Breaking up the sitting adds something your training does not fully cover, so the two work best as a pair.
Sitting for hours tends to leave you stiff and tight, particularly through the hips and the backs of the legs. Carry that into a session and your range can feel smaller and the whole thing can feel harder than it should. A little movement scattered through the working day keeps you looser and more primed, so you turn up to train in better shape rather than having to undo a day of stiffness first.
The hours between sessions are when your body actually adapts and recovers, and it does that better when you are gently moving than when you are sitting rock-still all day. Breaking up your sitting keeps the circulation going and stops you seizing up, which quietly supports your recovery. On rest days, staying gently active tends to leave you feeling better than a full day on the sofa.
The biggest lever for you is simply breaking up the sitting, since your training is already in hand. You could try standing and moving every half hour or so, a short walk after meals, moving on your rest days, and avoiding a long unbroken sit straight after a hard session. Using your desk breaks to gently move the areas you trained keeps them comfortable as they recover.
If you head almost straight from your desk into a session, a few minutes of easy movement first helps shake off the stiffness a sitting day leaves behind. VIDA has a short guided stretch video you can follow at your own pace to loosen up before you get going.