The aim of this study was to discern the impact of complementary protein with additional food consumption (AFC) and exercise on ectomorphism and energy variables on anorexic males. Thirty seven participants, 19-25 years, body mass index (BMI) >18.5 kg/m² were allocated to complement protein with AFI plus strength training (C1; n=10), protein with normal food intake (C2, n=8), and control group-3 (C-3 n = 19). The training lasted eight weeks (2 days × 40 M). C1 and C2 were administered with protein twice a week. The tests were BMI, body fat percentage, fat-free mass (FFM), and one-repetition max test in the leg press, chest press, and food intake (FI). ANOVA was applied for age, height, BMI, and repeated measures for BM, %BF, FFM, LP, CP, and FI. The significance level was 0.05. One-way ANOVA revealed no changes for age, H, and BMI (P >0.05). ANOVA with repeated measures resulted in significant effects on time (P <0.05), groups (P <0,05), and interaction effect of time by groups (P ˂0.05) for BM, LP, CP, and FI. FFM showed significant effects on time (P <0.05) and groups (P <0.05) but no interaction effect on time by groups (P >0.05). The %BF showed no significant effects on time and groups (P >0.05) but there was a significant interaction effect on time by groups (P <0.05). The study indicated that underweight subjects could improve body mass and strength with the training protocol.