Na mootram phenilam yasya vishtaa chaapsu nimajjati
medhraschotthana shukraabyaam heenas sa kleeba uchyate
The texts of ayurveda mention few preliminary physical tests to determine the potency of men.
If foamy lather forms when he urinates on ground in sitting position.(This determines the muscle tone)
If he gets good hard erection.Go to free consultations