Not really, ketosis starts when the liver is depleted of glycogen. While you can try to use vigorous exercise to speed this along, vigorous exercise will primarily target the glycogen stored in your muscle which does not effect ketosis. If you simply start eating &lt; 25g of net carbs you will be in ketosis in 18-36 hours, no magic or pain needed. Do keep in mind that insulin (which you will not be producing much of) also controls electrolyte retention so you may need to increase your intake or supplement (see r&#x2F;keto for details and advice) .