Inclusion Criteria:  sedentary men and women (approximately 1:1) aged 25-45 years, BMI 28-38 kg/m2 absence of chronic diseases and regular pharmacotherapy intake capable to complete a training intervention (assessment by a cardiologist) signed informed consent absence of any psychological, sociological or geographical factors that could jeopardize participation in the study Vaccination against SARS-CoV-2 with one of the approved vaccines available in Slovakia (at least 2 weeks after the last dose) and regular PCR testing during the study.  Exclusion Criteria:  any chronic disease (oncological, cardiovascular, neurological, liver, kidney or other diseases and its acute complications at the discretion of the doctor); No cooperation of probands; insufficient functional capacity - the presence comorbidities or disorders of the musculoskeletal system, which makes it impossible to complete the training program (assessment by cardiologist, or orthopedist or other specialist); smoking, alcohol or drugs abuse; non-compliance with epidemiological measures; absence of complete vaccination with SARS-CoV-2 vaccine; presence of a pacemaker or metal implants (contraindication for magnetic resonance imaging).