While I agree with you that you&#x27;ll need to increase the time to see real benefits it&#x27;s also not true that you can&#x27;t go more &quot;all out&quot;. As you get stronger you&#x27;ll be able to peddle harder, your peak wattage will go up, and you&#x27;ll have effectively increased the intensity compared to where you were before. Now obviously if this is the only exercise you&#x27;re getting you&#x27;re still going to hit a ceiling pretty soon.