Using a yoga block to open the chest and shoulders for a few minutes after long sitting could ease upper-back and neck tension and give a sense of more aligned posture.

noli's read

The idea that staying in the same position too long (rather than any one posture itself) is what bothers the body lines up with the more recent literature: a systematic review (Slater et al., 2019) finds no strong link between a specific posture and pain, while a meta-analysis on prolonged sitting (2021, 79 studies) finds a clearer association with neck/shoulder pain (OR 1.73) than with strict low back pain, and importantly that reducing sitting time, as an intervention, improves these symptoms. A chest-opening stretch plausibly gives immediate subjective relief (local muscle release, a sense of more room), which is why 'a few minutes' can genuinely feel good in the moment. The phrase 'begin reversing the effects of desk life' goes further than the data show: desk postures carry a modest statistical association with certain pains, not a deformation that a few minutes of stretching would reverse. The suggested move is low-risk and reasonable as an active break; it's the causal story (the desk damages the body, this move repairs it) that's more assertive than the available evidence.

the sources

1. 1Slater D, Korakakis V, O'Sullivan P, et al. 2019