which oral steroid is the best to include in a cycle focused on cutting and increasing cardio performance. im aware that all steroids can be used for cutting purposes, and that cutting is all related to diet. what im interested in is which steroid doesnt effect the respiratpory system the most. for instance tren makes it difficult for me to run. therefore, does dianabol inhibit my ability to perform cardio? is turinabol a good alternative or should i stick with winstrol which has a tendency to make me break out like crazy.