▁when ▁there ▁is ▁doubt ▁that ▁decom pression ▁was ▁sufficient . ▁Low ▁ex ert ion ▁during ▁the ▁ing ass ing ▁stage ▁of ▁the ▁d ive : ▁This ▁reduces ▁circul ation ▁during ▁ing ass ing , ▁so ▁it ▁will ▁take ▁longer ▁for ▁perf usion ▁limited ▁t issues ▁to ▁reach ▁any ▁specific ▁in ert ▁gas ▁loading . ▁Con sequently , ▁the ▁t issue ▁loading ▁at ▁the ▁end ▁of ▁the ▁d ive ▁will ▁be ▁lower ▁than ▁if ▁the ▁diver ▁worked ▁hard . ▁This ▁is ▁obviously ▁not ▁always ▁possible , ▁and ▁may ▁be ▁log ist ically ▁und es irable ▁when ▁there ▁is ▁a ▁job ▁to ▁be ▁done . ▁De com pression ▁algorithms ▁assume ▁and ▁are ▁tested ▁at ▁a ▁high ▁level ▁of ▁ex ert ion , ▁so ▁the ▁indicated ▁decom pression ▁should ▁be ▁accept ably ▁safe ▁even ▁when ▁ex ert ion ▁is ▁fairly ▁inten se . ▁Less ▁ex ert ion ▁will ▁reduce ▁the ▁risk ▁by ▁an ▁unknown ▁amount . ▁ ▁De prec ated ▁practices ▁Pract ices ▁considered ▁to ▁either ▁increase ▁the ▁risk ▁of ▁developing ▁decom pression ▁sick ness ▁after ▁div ing , ▁or ▁for ▁which ▁there ▁is ▁theoretical ▁risk , ▁but ▁ins u fficient ▁data : ▁Hot ▁tub s , ▁j ac uzz is , ▁show ers ▁or ▁sa unas ▁after ▁div ing : ▁Ex pos ing ▁the ▁diver ▁to ▁a ▁hot ▁external ▁environment ▁immediately ▁after ▁div ing ▁will ▁alter ▁decom pression ▁stress . ▁The ▁net ▁result ▁may ▁be ▁good ▁or ▁bad ▁depending ▁on ▁the ▁in ert ▁gas ▁load ▁and ▁the ▁heat ▁stress . ▁Re he ating ▁a ▁ch