Everest base camp standard trek is suitable for average people who are moderately fit, thus no previous experience is required. Some physical fitness programs such as running, swimming, hiking is recommended before you embark on your journey. Whilst on the trek, it is common to experience some discomfort before being fully acclimatized.
To prepare for a strenuous trek you should begin training at least two to three months before your departure. As a guideline, an hour of aerobic exercise three to four times per week would be considered a minimum requirement. The best preparation is bushwalking involving relatively steep ascents and descents. If you can manage a couple of valley floor to ridgeline ascents per comfortable and able to enjoy the trek to the fullest.