1, lined running shorts
The biggest significance of the lining in boys' running shorts is to prevent throwing eggs. As for how serious the consequences are, it can be compared with girls running without wearing sports bras. Girls add a pair of underwear to their shorts, mostly to prevent exposure. However, the lining design in shorts mostly considers the exposure point, and the edge of the lining itself is elastically tightened, so girls who are worried about exposure worry too much.
2. Don't wear underwear when wearing tights, compression pants and lined running shorts.
For men, the close-fitting compression pants stand out, and the lower edge of underwear will be very obvious; Women's underwear will cause the buttocks to sag along its lower edge, and will be exposed to everyone when wearing tight pants or compression pants, especially briefs, which are more likely to attract people's attention.
When running, the lower edge of underwear will be rolled up because the thigh is lifted repeatedly, and the pressure of tight pants or compressed pants will make you feel very uncomfortable. In the case of briefs, although the trouble of jumping up along the lower edge can be avoided, during running, the underwear is soaked by sweat and rubs the groin repeatedly, which is easy to wear out the skin and make it red and swollen, and in a humid environment, the groin is easy to breed bacteria and lead to infection.