Mayo Clinic emphasizes that muscles need recovery time to adapt and rebuild. Balance Energy and Recovery Cleveland Clinic explains that large calorie deficits can contribute to fatigue and slower recovery. Reduced energy intake can affect how the body responds to physical stress
Lammert F, Gurusamy K, Ko CW, Miquel JF, Mendez-Sanchez N, Portincasa P, van Erpecum KJ, van Laarhoven CJ, Wang DQ (2016) Gallstones
While behavioural support alongside medication was associated with greater weight loss, it did not slow the rate of regain afterwards
Laboratories [well, NHS labs in the UK] have very sophisticated error-trapping routines
And we keep having to use our clinical judgment, rather than trusting blindly on test results 5
Knowing these in advance saves you from learning them the hard way