Despite several investigations into “perfect” sitting positions in terms of the “optimal” spinal curvature during sitting (Waongenngarm et al., 2015; O'Sullivan et al., 2012a; Pynt et al., 2001; Baumgartner et al., 2012; Zemp et al., 2013), broad consensus is lacking, suggesting that the “correct” sitting position might be subject-specific (Claus et al., 2016).