This database includes 25 participants from the High-Intensity Functional Training (HIFT) program. Each participant completed three workout modalities: AMRAP (As Many Rounds As Possible), FOR TIME, and EMOM (Every Minute on the Minute). The recorded variables for each participant and workout modality are Countermovement Jump (CMJ), Lactate levels, Rate of Perceived Exertion (RPE), Heart Rate, and Heart Rate Variability (HRV). The dataset contains some missing values (NAs).